Rewrite status action account list to use UICollectionView

Tusker.xcodeproj/project.pbxproj

@@ -203,7 +203,6 @@
 		D6A3BC852321F6C100FD64D5 /* AccountListTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6A3BC832321F6C100FD64D5 /* AccountListTableViewController.swift */; };
 		D6A3BC8A2321F79B00FD64D5 /* AccountTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6A3BC882321F79B00FD64D5 /* AccountTableViewCell.swift */; };
 		D6A3BC8B2321F79B00FD64D5 /* AccountTableViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = D6A3BC892321F79B00FD64D5 /* AccountTableViewCell.xib */; };
-		D6A3BC8F2321FFB900FD64D5 /* StatusActionAccountListTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6A3BC8D2321FFB900FD64D5 /* StatusActionAccountListTableViewController.swift */; };
 		D6A4DCCC2553667800D9DE31 /* FastAccountSwitcherViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6A4DCCA2553667800D9DE31 /* FastAccountSwitcherViewController.swift */; };
 		D6A4DCCD2553667800D9DE31 /* FastAccountSwitcherViewController.xib in Resources */ = {isa = PBXBuildFile; fileRef = D6A4DCCB2553667800D9DE31 /* FastAccountSwitcherViewController.xib */; };
 		D6A4DCE525537C7A00D9DE31 /* FastSwitchingAccountView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6A4DCE425537C7A00D9DE31 /* FastSwitchingAccountView.swift */; };
@@ -271,6 +270,8 @@
 		D6CA6A92249FAD8900AD45C1 /* AudioSessionHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6CA6A91249FAD8900AD45C1 /* AudioSessionHelper.swift */; };
 		D6CA6A94249FADE700AD45C1 /* GalleryPlayerViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6CA6A93249FADE700AD45C1 /* GalleryPlayerViewController.swift */; };
 		D6D12B2F2925D66500D528E1 /* TimelineGapCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D12B2E2925D66500D528E1 /* TimelineGapCollectionViewCell.swift */; };
+		D6D12B56292D57E800D528E1 /* AccountCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D12B55292D57E800D528E1 /* AccountCollectionViewCell.swift */; };
+		D6D12B58292D5B2C00D528E1 /* StatusActionAccountListViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D12B57292D5B2C00D528E1 /* StatusActionAccountListViewController.swift */; };
 		D6D3F4C424FDB6B700EC4A6A /* View+ConditionalModifier.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D3F4C324FDB6B700EC4A6A /* View+ConditionalModifier.swift */; };
 		D6D3FDE224F46A8D00FF50A5 /* ComposeUIState.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D3FDE124F46A8D00FF50A5 /* ComposeUIState.swift */; };
 		D6D4CC94250DB86A00FCCF8D /* ComposeTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D4CC93250DB86A00FCCF8D /* ComposeTests.swift */; };
@@ -566,7 +567,6 @@
 		D6A3BC832321F6C100FD64D5 /* AccountListTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountListTableViewController.swift; sourceTree = "<group>"; };
 		D6A3BC882321F79B00FD64D5 /* AccountTableViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountTableViewCell.swift; sourceTree = "<group>"; };
 		D6A3BC892321F79B00FD64D5 /* AccountTableViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = AccountTableViewCell.xib; sourceTree = "<group>"; };
-		D6A3BC8D2321FFB900FD64D5 /* StatusActionAccountListTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusActionAccountListTableViewController.swift; sourceTree = "<group>"; };
 		D6A4DCCA2553667800D9DE31 /* FastAccountSwitcherViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FastAccountSwitcherViewController.swift; sourceTree = "<group>"; };
 		D6A4DCCB2553667800D9DE31 /* FastAccountSwitcherViewController.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = FastAccountSwitcherViewController.xib; sourceTree = "<group>"; };
 		D6A4DCE425537C7A00D9DE31 /* FastSwitchingAccountView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FastSwitchingAccountView.swift; sourceTree = "<group>"; };
@@ -634,6 +634,8 @@
 		D6CA6A91249FAD8900AD45C1 /* AudioSessionHelper.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AudioSessionHelper.swift; sourceTree = "<group>"; };
 		D6CA6A93249FADE700AD45C1 /* GalleryPlayerViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GalleryPlayerViewController.swift; sourceTree = "<group>"; };
 		D6D12B2E2925D66500D528E1 /* TimelineGapCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineGapCollectionViewCell.swift; sourceTree = "<group>"; };
+		D6D12B55292D57E800D528E1 /* AccountCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountCollectionViewCell.swift; sourceTree = "<group>"; };
+		D6D12B57292D5B2C00D528E1 /* StatusActionAccountListViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusActionAccountListViewController.swift; sourceTree = "<group>"; };
 		D6D3F4C324FDB6B700EC4A6A /* View+ConditionalModifier.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "View+ConditionalModifier.swift"; sourceTree = "<group>"; };
 		D6D3FDE124F46A8D00FF50A5 /* ComposeUIState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposeUIState.swift; sourceTree = "<group>"; };
 		D6D4CC93250DB86A00FCCF8D /* ComposeTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposeTests.swift; sourceTree = "<group>"; };
@@ -1191,6 +1193,7 @@
 			children = (
 				D6A3BC882321F79B00FD64D5 /* AccountTableViewCell.swift */,
 				D6A3BC892321F79B00FD64D5 /* AccountTableViewCell.xib */,
+				D6D12B55292D57E800D528E1 /* AccountCollectionViewCell.swift */,
 			);
 			path = "Account Cell";
 			sourceTree = "<group>";
@@ -1198,7 +1201,7 @@
 		D6A3BC8C2321FF9B00FD64D5 /* Status Action Account List */ = {
 			isa = PBXGroup;
 			children = (
-				D6A3BC8D2321FFB900FD64D5 /* StatusActionAccountListTableViewController.swift */,
+				D6D12B57292D5B2C00D528E1 /* StatusActionAccountListViewController.swift */,
 			);
 			path = "Status Action Account List";
 			sourceTree = "<group>";
@@ -1874,7 +1877,6 @@
 				D6531DEE246B81C9000F9538 /* GifvAttachmentView.swift in Sources */,
 				D673ACCE2919E74200D6F8B0 /* MenuPicker.swift in Sources */,
 				D6370B9C24421FF30092A7FF /* Tusker.xcdatamodeld in Sources */,
-				D6A3BC8F2321FFB900FD64D5 /* StatusActionAccountListTableViewController.swift in Sources */,
 				D6AEBB4823216B1D00E5038B /* AccountActivity.swift in Sources */,
 				04ED00B121481ED800567C53 /* SteppedProgressView.swift in Sources */,
 				D677284C24ECBE9100C732D3 /* ComposeAvatarImageView.swift in Sources */,
@@ -1951,6 +1953,7 @@
 				D6C82B5625C5F3F20017F1E6 /* ExpandThreadTableViewCell.swift in Sources */,
 				D686BBE324FBF8110068E6AA /* WrappedProgressView.swift in Sources */,
 				D620483423D3801D008A63EF /* LinkTextView.swift in Sources */,
+				D6D12B58292D5B2C00D528E1 /* StatusActionAccountListViewController.swift in Sources */,
 				D6412B0D24B0D4CF00F5412E /* ProfileHeaderView.swift in Sources */,
 				D641C77F213DC78A004B4513 /* InlineTextAttachment.swift in Sources */,
 				D627943523A5525100D38C68 /* StatusActivity.swift in Sources */,
@@ -2033,6 +2036,7 @@
 				D6E426B325337C7000C02E1C /* CustomEmojiImageView.swift in Sources */,
 				D6D4DDD0212518A000E1C4BB /* AppDelegate.swift in Sources */,
 				D6412B0924B0291E00F5412E /* MyProfileViewController.swift in Sources */,
+				D6D12B56292D57E800D528E1 /* AccountCollectionViewCell.swift in Sources */,
 				D6A6C10525B6138A00298D0F /* StatusTablePrefetching.swift in Sources */,
 				D6C82B4125C5BB7E0017F1E6 /* ExploreViewController.swift in Sources */,
 				D6B053A423BD2C8100A066FA /* AssetCollectionsListViewController.swift in Sources */,

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

@@ -1,163 +0,0 @@
-//
-//  StatusActionAccountListTableViewController.swift
-//  Tusker
-//
-//  Created by Shadowfacts on 9/5/19.
-//  Copyright © 2019 Shadowfacts. All rights reserved.
-//
-
-import UIKit
-import Pachyderm
-
-class StatusActionAccountListTableViewController: EnhancedTableViewController {
-        
-    private let statusCell = "statusCell"
-    private let accountCell = "accountCell"
-    
-    weak var mastodonController: MastodonController!
-    
-    let actionType: ActionType
-    let statusID: String
-    var statusState: StatusState
-    var accountIDs: [String]? {
-        didSet {
-            tableView.reloadData()
-        }
-    }
-    
-    /// If `true`, a warning will be shown below the account list describing that the total favs/reblogs may be innacurate.
-    var showInacurateCountWarning = false
-    
-    /**
-     Creates a new view controller showing the accounts that performed the given action on the given status.
-     
-     - Parameter actionType The action that this VC is for.
-     - Parameter statusID The ID of the status to show.
-     - Parameter accountIDs The accounts that will be shown. If `nil` is passed, a request will be performed to load the accounts.
-     - Parameter mastodonController The `MastodonController` instance this view controller uses.
-     */
-    init(actionType: ActionType, statusID: String, statusState: StatusState, accountIDs: [String]?, mastodonController: MastodonController) {
-        self.mastodonController = mastodonController
-        
-        self.actionType = actionType
-        self.statusID = statusID
-        self.statusState = statusState
-        self.accountIDs = accountIDs
-        
-        super.init(style: .grouped)
-        
-        dragEnabled = true
-        
-        switch actionType {
-        case .favorite:
-            title = NSLocalizedString("Favorited By", comment: "status favorited by accounts list title")
-        case .reblog:
-            title = NSLocalizedString("Reblogged By", comment: "status reblogged by accounts list title")
-        }
-    }
-
-    required init?(coder: NSCoder) {
-        fatalError("init(coder:) has not been implemented")
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-
-        tableView.register(UINib(nibName: "TimelineStatusTableViewCell", bundle: .main), forCellReuseIdentifier: statusCell)
-        tableView.register(UINib(nibName: "AccountTableViewCell", bundle: .main), forCellReuseIdentifier: accountCell)
-        
-        tableView.rowHeight = UITableView.automaticDimension
-        tableView.estimatedRowHeight = 66 // height of account cell, which will be the most common
-        
-        tableView.alwaysBounceVertical = true
-        
-        tableView.tableHeaderView = UIView(frame: CGRect(x: 0, y: 0, width: 0, height: CGFloat.leastNormalMagnitude))
-        
-        if accountIDs == nil {
-            // account IDs haven't been set, so perform a request to load them
-            guard let status = mastodonController.persistentContainer.status(for: statusID) else {
-                fatalError("Missing cached status \(statusID)")
-            }
-
-            tableView.tableFooterView = UIActivityIndicatorView(style: .large)
-            
-            let request = actionType == .favorite ? Status.getFavourites(status.id) : Status.getReblogs(status.id)
-            mastodonController.run(request) { (response) in
-                guard case let .success(accounts, _) = response else { fatalError() }
-                self.mastodonController.persistentContainer.addAll(accounts: accounts) {
-                    DispatchQueue.main.async {
-                        self.accountIDs = accounts.map { $0.id }
-                        self.tableView.tableFooterView = nil
-                    }
-                }
-            }
-        }
-    }
-
-    // MARK: - Table view data source
-
-    override func numberOfSections(in tableView: UITableView) -> Int {
-        return 2
-    }
-
-    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        switch section {
-        case 0: // status
-            return 1
-        case 1: // accounts
-            if let accountIDs = accountIDs {
-                return accountIDs.count
-            } else {
-                return 0
-            }
-        default:
-            fatalError("Invalid section \(section)")
-        }
-    }
-
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-        switch indexPath.section {
-        case 0:
-            guard let cell = tableView.dequeueReusableCell(withIdentifier: statusCell, for: indexPath) as? TimelineStatusTableViewCell else { fatalError() }
-            cell.delegate = self
-            cell.updateUI(statusID: statusID, state: statusState)
-            return cell
-        case 1:
-            guard let accountIDs = accountIDs,
-                let cell = tableView.dequeueReusableCell(withIdentifier: accountCell, for: indexPath) as? AccountTableViewCell else { fatalError() }
-            cell.delegate = self
-            cell.updateUI(accountID: accountIDs[indexPath.row])
-            return cell
-        default:
-            fatalError("Invalid section \(indexPath.section)")
-        }
-    }
-    
-    override func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
-        guard section == 1, showInacurateCountWarning else { return nil }
-        return NSLocalizedString("Favorite and reblog counts for posts originating from instances other than your own may not be accurate.", comment: "shown on lists of status total actions")
-    }
-    
-    enum ActionType {
-        case favorite, reblog
-    }
-    
-}
-
-extension StatusActionAccountListTableViewController: TuskerNavigationDelegate {
-    var apiController: MastodonController! { mastodonController }
-}
-
-extension StatusActionAccountListTableViewController: ToastableViewController {
-}
-
-extension StatusActionAccountListTableViewController: MenuActionProvider {
-}
-
-extension StatusActionAccountListTableViewController: StatusTableViewCellDelegate {
-    func statusCellCollapsedStateChanged(_ cell: BaseStatusTableViewCell) {
-        // causes the table view to recalculate the cell heights
-        tableView.beginUpdates()
-        tableView.endUpdates()
-    }
-}

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

@@ -0,0 +1,266 @@
+//
+//  StatusActionAccountListViewController.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 9/5/19.
+//  Copyright © 2019 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import Pachyderm
+
+class StatusActionAccountListViewController: UIViewController {
+    
+    private let mastodonController: MastodonController
+    private let actionType: ActionType
+    private let statusID: String
+    private let statusState: StatusState
+    private var accountIDs: [String]?
+    
+    /// If `true`, a warning will be shown below the account list describing that the total favs/reblogs may be innacurate.
+    var showInacurateCountWarning = false
+    
+    private var collectionView: UICollectionView {
+        view as! UICollectionView
+    }
+    private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
+    
+    /**
+     Creates a new view controller showing the accounts that performed the given action on the given status.
+     
+     - Parameter actionType The action that this VC is for.
+     - Parameter statusID The ID of the status to show.
+     - Parameter accountIDs The accounts that will be shown. If `nil` is passed, a request will be performed to load the accounts.
+     - Parameter mastodonController The `MastodonController` instance this view controller uses.
+     */
+    init(actionType: ActionType, statusID: String, statusState: StatusState, accountIDs: [String]?, mastodonController: MastodonController) {
+        self.mastodonController = mastodonController
+        self.actionType = actionType
+        self.statusID = statusID
+        self.statusState = statusState
+        self.accountIDs = accountIDs
+        
+        super.init(nibName: nil, bundle: nil)
+        
+        switch actionType {
+        case .favorite:
+            title = NSLocalizedString("Favorited By", comment: "status favorited by accounts list title")
+        case .reblog:
+            title = NSLocalizedString("Reblogged By", comment: "status reblogged by accounts list title")
+        }
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func loadView() {
+        let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
+            switch dataSource.sectionIdentifier(for: sectionIndex)! {
+            case .status:
+                var config = UICollectionLayoutListConfiguration(appearance: .grouped)
+                config.footerMode = self.showInacurateCountWarning ? .supplementary : .none
+                config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
+                    (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
+                }
+                config.trailingSwipeActionsConfigurationProvider = { [unowned self] in
+                    (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.trailingSwipeActions()
+                }
+                return NSCollectionLayoutSection.list(using: config, layoutEnvironment: environment)
+            case .accounts:
+                return NSCollectionLayoutSection.list(using: .init(appearance: .grouped), layoutEnvironment: environment)
+            }
+        }
+        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView.delegate = self
+        collectionView.dragDelegate = self
+        dataSource = createDataSource()
+    }
+    
+    private func createDataSource() -> UICollectionViewDiffableDataSource<Section, Item> {
+        let statusCell = UICollectionView.CellRegistration<TimelineStatusCollectionViewCell, Void> { [unowned self] cell, indexPath, _ in
+            cell.delegate = self
+            cell.updateUI(statusID: self.statusID, state: self.statusState)
+        }
+        let accountCell = UICollectionView.CellRegistration<AccountCollectionViewCell, String> { [unowned self] cell, indexPath, item in
+            cell.delegate = self
+            cell.updateUI(accountID: item)
+        }
+        let dataSource = UICollectionViewDiffableDataSource<Section, Item>(collectionView: collectionView) { collectionView, indexPath, itemIdentifier in
+            switch itemIdentifier {
+            case .status:
+                return collectionView.dequeueConfiguredReusableCell(using: statusCell, for: indexPath, item: ())
+            case .account(let id):
+                return collectionView.dequeueConfiguredReusableCell(using: accountCell, for: indexPath, item: id)
+            }
+        }
+        let sectionHeaderCell = UICollectionView.SupplementaryRegistration<UICollectionViewListCell>(elementKind: UICollectionView.elementKindSectionFooter) { (headerView, collectionView, indexPath) in
+            var config = headerView.defaultContentConfiguration()
+            config.text = NSLocalizedString("Favorite and reblog counts for posts originating from instances other than your own may not be accurate.", comment: "shown on lists of status total actions")
+            headerView.contentConfiguration = config
+        }
+        dataSource.supplementaryViewProvider = { collectionView, elementKind, indexPath in
+            return collectionView.dequeueConfiguredReusableSupplementary(using: sectionHeaderCell, for: indexPath)
+        }
+        return dataSource
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
+        snapshot.appendSections([.status, .accounts])
+        snapshot.appendItems([.status], toSection: .status)
+        if let accountIDs {
+            snapshot.appendItems(accountIDs.map { .account($0) }, toSection: .accounts)
+        }
+        dataSource.apply(snapshot, animatingDifferences: false)
+    }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        if accountIDs == nil {
+            Task {
+                await loadAccounts()
+            }
+        }
+    }
+    
+    private func loadAccounts() async {
+        let request: Request<[Account]>
+        switch actionType {
+        case .favorite:
+            request = Status.getFavourites(statusID)
+        case .reblog:
+            request = Status.getReblogs(statusID)
+        }
+        do {
+            // TODO: pagination
+            let (accounts, _) = try await mastodonController.run(request)
+            
+            await withCheckedContinuation { continuation in
+                mastodonController.persistentContainer.addAll(accounts: accounts) {
+                    continuation.resume()
+                }
+            }
+            
+            accountIDs = accounts.map(\.id)
+            
+            var snapshot = dataSource.snapshot()
+            snapshot.appendItems(accounts.map { .account($0.id) }, toSection: .accounts)
+            dataSource.apply(snapshot, animatingDifferences: true) {}
+            
+        } catch {
+            let config = ToastConfiguration(from: error, with: "Error Loading Accounts", in: self) { toast in
+                toast.dismissToast(animated: true)
+                await self.loadAccounts()
+            }
+            self.showToast(configuration: config, animated: true)
+        }
+    }
+}
+
+extension StatusActionAccountListViewController {
+    enum ActionType {
+        case favorite, reblog
+    }
+}
+
+extension StatusActionAccountListViewController {
+    enum Section {
+        case status
+        case accounts
+    }
+    enum Item: Hashable {
+        case status
+        case account(String)
+    }
+}
+
+extension StatusActionAccountListViewController: UICollectionViewDelegate {
+    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
+        switch dataSource.itemIdentifier(for: indexPath) {
+        case nil:
+            return
+        case .status:
+            selected(status: statusID, state: statusState.copy())
+        case .account(let id):
+            selected(account: id)
+        }
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
+        guard let item = dataSource.itemIdentifier(for: indexPath),
+              let cell = collectionView.cellForItem(at: indexPath) else {
+            return nil
+        }
+        switch item {
+        case .status:
+            return (cell as? TimelineStatusCollectionViewCell)?.contextMenuConfiguration()
+        case .account(let id):
+            return UIContextMenuConfiguration {
+                ProfileViewController(accountID: id, mastodonController: self.mastodonController)
+            } actionProvider: { _ in
+                UIMenu(children: self.actionsForProfile(accountID: id, sourceView: cell))
+            }
+        }
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
+        MenuPreviewHelper.willPerformPreviewAction(animator: animator, presenter: self)
+    }
+}
+
+extension StatusActionAccountListViewController: UICollectionViewDragDelegate {
+    func collectionView(_ collectionView: UICollectionView, itemsForBeginning session: UIDragSession, at indexPath: IndexPath) -> [UIDragItem] {
+        guard let currentAccountID = mastodonController.accountInfo?.id,
+              let item = dataSource.itemIdentifier(for: indexPath) else {
+            return []
+        }
+        let provider: NSItemProvider
+        switch item {
+        case .status:
+            guard let status = mastodonController.persistentContainer.status(for: statusID) else {
+                return []
+            }
+            provider = NSItemProvider(object: status.url! as NSURL)
+            let activity = UserActivityManager.showConversationActivity(mainStatusID: statusID, accountID: currentAccountID)
+            activity.displaysAuxiliaryScene = true
+            provider.registerObject(activity, visibility: .all)
+        case .account(let id):
+            guard let account = mastodonController.persistentContainer.account(for: id) else {
+                return []
+            }
+            provider = NSItemProvider(object: account.url as NSURL)
+            let activity = UserActivityManager.showProfileActivity(id: account.id, accountID: currentAccountID)
+            activity.displaysAuxiliaryScene = true
+            provider.registerObject(activity, visibility: .all)
+        }
+        return [UIDragItem(itemProvider: provider)]
+    }
+}
+
+extension StatusActionAccountListViewController: TuskerNavigationDelegate {
+    var apiController: MastodonController! { mastodonController }
+}
+
+extension StatusActionAccountListViewController: MenuActionProvider {
+}
+
+extension StatusActionAccountListViewController: StatusCollectionViewCellDelegate {
+    func statusCellNeedsReconfigure(_ cell: StatusCollectionViewCell, animated: Bool, completion: (() -> Void)?) {
+        if let indexPath = collectionView.indexPath(for: cell) {
+            var snapshot = dataSource.snapshot()
+            snapshot.reconfigureItems([dataSource.itemIdentifier(for: indexPath)!])
+            dataSource.apply(snapshot, animatingDifferences: animated, completion: completion)
+        }
+    }
+}
+
+extension StatusActionAccountListViewController: StatusBarTappableViewController {
+    func handleStatusBarTapped(xPosition: CGFloat) -> StatusBarTapActionResult {
+        collectionView.scrollToTop()
+        return .stop
+    }
+}

Tusker/TuskerNavigationDelegate.swift

@@ -183,8 +183,8 @@ extension TuskerNavigationDelegate {
         show(vc, sender: self)
     }
     
-    func statusActionAccountList(action: StatusActionAccountListTableViewController.ActionType, statusID: String, statusState state: StatusState, accountIDs: [String]?) -> StatusActionAccountListTableViewController {
+    func statusActionAccountList(action: StatusActionAccountListViewController.ActionType, statusID: String, statusState state: StatusState, accountIDs: [String]?) -> StatusActionAccountListViewController {
-        return StatusActionAccountListTableViewController(actionType: action, statusID: statusID, statusState: state, accountIDs: accountIDs, mastodonController: apiController)
+        return StatusActionAccountListViewController(actionType: action, statusID: statusID, statusState: state, accountIDs: accountIDs, mastodonController: apiController)
     }
     
 }

Tusker/Views/Account Cell/AccountCollectionViewCell.swift

@@ -0,0 +1,148 @@
+//
+//  AccountCollectionViewCell.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 11/22/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import SwiftSoup
+
+class AccountCollectionViewCell: UICollectionViewListCell {
+    
+    private lazy var hStack = UIStackView(arrangedSubviews: [
+        avatarImageView,
+        vStack,
+    ]).configure {
+        $0.axis = .horizontal
+        $0.spacing = 8
+        $0.alignment = .leading
+    }
+    
+    private let avatarImageView = CachedImageView(cache: .avatars).configure {
+        $0.layer.masksToBounds = true
+        NSLayoutConstraint.activate([
+            $0.widthAnchor.constraint(equalToConstant: 50),
+            $0.heightAnchor.constraint(equalToConstant: 50),
+        ])
+    }
+    
+    private lazy var vStack = UIStackView(arrangedSubviews: [
+        displayNameLabel,
+        usernameLabel,
+        noteLabel,
+    ]).configure {
+        $0.axis = .vertical
+        $0.spacing = 4
+        $0.alignment = .leading
+    }
+    
+    private let displayNameLabel = EmojiLabel().configure {
+        $0.font = .preferredFont(forTextStyle: .body)
+        $0.adjustsFontSizeToFitWidth = true
+        $0.adjustsFontForContentSizeCategory = true
+    }
+    
+    private let usernameLabel = UILabel().configure {
+        $0.font = UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 15, weight: .light))
+        $0.textColor = .secondaryLabel
+        $0.adjustsFontSizeToFitWidth = true
+        $0.adjustsFontForContentSizeCategory = true
+    }
+    
+    private let noteLabel = EmojiLabel().configure {
+        $0.font = UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 15))
+        $0.numberOfLines = 2
+    }
+    
+    weak var delegate: (TuskerNavigationDelegate & MenuActionProvider)?
+    var mastodonController: MastodonController! { delegate?.apiController }
+    
+    private var accountID: String?
+    private var isGrayscale = false
+    
+    override init(frame: CGRect) {
+        super.init(frame: .zero)
+        
+        hStack.translatesAutoresizingMaskIntoConstraints = false
+        contentView.addSubview(hStack)
+        NSLayoutConstraint.activate([
+            hStack.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 8),
+            hStack.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -8),
+            hStack.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 8),
+            hStack.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -8),
+        ])
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    // MARK: Accessibility
+    
+    override var isAccessibilityElement: Bool {
+        get { true }
+        set {}
+    }
+    
+    override var accessibilityAttributedLabel: NSAttributedString? {
+        get {
+            guard let accountID,
+                  let account = mastodonController.persistentContainer.account(for: accountID) else {
+                return nil
+            }
+            var str = AttributedString(account.displayOrUserName)
+            str += ", @"
+            str += AttributedString(account.acct)
+            return NSAttributedString(str)
+        }
+        set {}
+    }
+    
+    override func accessibilityActivate() -> Bool {
+        guard let accountID else {
+            return false
+        }
+        delegate?.selected(account: accountID)
+        return true
+    }
+
+    // MARK: Configure UI
+    
+    func updateUI(accountID: String) {
+        guard let account = mastodonController.persistentContainer.account(for: accountID) else {
+            fatalError()
+        }
+        self.accountID = accountID
+        
+        avatarImageView.update(for: account.avatar)
+        usernameLabel.text = "@\(account.acct)"
+        updateUIForPreferences(account: account)
+    }
+    
+    private func updateUIForPreferences(account: AccountMO) {
+        avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * 50
+        isGrayscale = Preferences.shared.grayscaleImages
+        if Preferences.shared.hideCustomEmojiInUsernames {
+            displayNameLabel.text = account.displayNameWithoutCustomEmoji
+        } else {
+            displayNameLabel.text = account.displayOrUserName
+            displayNameLabel.setEmojis(account.emojis, identifier: account.id)
+        }
+        
+        let doc = try! SwiftSoup.parseBodyFragment(account.note)
+        noteLabel.text = try! doc.text()
+        noteLabel.setEmojis(account.emojis, identifier: account.id)
+    }
+    
+    @objc private func preferencesChanged() {
+        if let accountID,
+           let account = mastodonController?.persistentContainer.account(for: accountID) {
+            updateUIForPreferences(account: account)
+        }
+    }
+    
+}

Tusker/Views/CachedImageView.swift

@@ -56,6 +56,7 @@ class CachedImageView: UIImageView {
             guard let transformedImage = ImageGrayscalifier.convertIfNecessary(url: url, image: image) else {
                 return
             }
+            try Task.checkCancellation()
             self.image = transformedImage
         }
     }

Tusker/Views/Notifications/ActionNotificationGroupTableViewCell.swift

@@ -218,7 +218,7 @@ extension ActionNotificationGroupTableViewCell: SelectableTableViewCell {
         guard let delegate = delegate else { return }
         let notifications = group.notifications
         let accountIDs = notifications.map { $0.account.id }
-        let action: StatusActionAccountListTableViewController.ActionType
+        let action: StatusActionAccountListViewController.ActionType
         switch notifications.first!.kind {
         case .favourite:
             action = .favorite
@@ -228,6 +228,7 @@ extension ActionNotificationGroupTableViewCell: SelectableTableViewCell {
             fatalError()
         }
         let vc = delegate.statusActionAccountList(action: action, statusID: statusID, statusState: .unknown, accountIDs: accountIDs)
+        vc.showInacurateCountWarning = false
         delegate.show(vc)
     }
 }
@@ -235,9 +236,12 @@ extension ActionNotificationGroupTableViewCell: SelectableTableViewCell {
 extension ActionNotificationGroupTableViewCell: MenuPreviewProvider {
     func getPreviewProviders(for location: CGPoint, sourceViewController: UIViewController) -> PreviewProviders? {
         return (content: {
+            guard let delegate = self.delegate else {
+                return nil
+            }
             let notifications = self.group.notifications
             let accountIDs = notifications.map { $0.account.id }
-            let action: StatusActionAccountListTableViewController.ActionType
+            let action: StatusActionAccountListViewController.ActionType
             switch notifications.first!.kind {
             case .favourite:
                 action = .favorite
@@ -246,7 +250,9 @@ extension ActionNotificationGroupTableViewCell: MenuPreviewProvider {
             default:
                 fatalError()
             }
-            return self.delegate?.statusActionAccountList(action: action, statusID: self.statusID, statusState: .unknown, accountIDs: accountIDs)
+            let vc = delegate.statusActionAccountList(action: action, statusID: self.statusID, statusState: .unknown, accountIDs: accountIDs)
+            vc.showInacurateCountWarning = false
+            return vc
         }, actions: {
             return []
         })