Added a /tab command

MinecraftClient/Commands/Tab.cs

@@ -0,0 +1,50 @@
+using Avalonia.Threading;
+using Brigadier.NET;
+using Brigadier.NET.Builder;
+using MinecraftClient.CommandHandler;
+using MinecraftClient.Tui;
+
+namespace MinecraftClient.Commands
+{
+    public class Tab : Command
+    {
+        public override string CmdName => "tab";
+        public override string CmdUsage => "tab";
+        public override string CmdDesc => Translations.cmd_tab_desc;
+
+        public override void RegisterCommand(CommandDispatcher<CmdResult> dispatcher)
+        {
+            dispatcher.Register(l => l.Literal("help")
+                .Then(l => l.Literal(CmdName)
+                    .Executes(r => GetUsage(r.Source)))
+            );
+
+            dispatcher.Register(l => l.Literal(CmdName)
+                .Executes(r => ShowTab(r.Source))
+                .Then(l => l.Literal("_help")
+                    .Executes(r => GetUsage(r.Source))
+                    .Redirect(dispatcher.GetRoot().GetChild("help").GetChild(CmdName)))
+            );
+        }
+
+        private int GetUsage(CmdResult r) => r.SetAndReturn(GetCmdDescTranslated());
+
+        private static int ShowTab(CmdResult r)
+        {
+            McClient handler = CmdResult.currentHandler!;
+            var snapshot = handler.GetTabListSnapshot();
+
+            if (ConsoleIO.Backend is TuiConsoleBackend)
+            {
+                var view = TuiConsoleBackend.Instance?.GetView();
+                if (view is null)
+                    return r.SetAndReturn(CmdResult.Status.Fail, Translations.cmd_tab_tui_unavailable);
+
+                Dispatcher.UIThread.Post(() => view.ShowOverlay(new TabListOverlay(handler)));
+                return r.SetAndReturn(CmdResult.Status.Done, Translations.cmd_tab_tui_opened);
+            }
+
+            return r.SetAndReturn(CmdResult.Status.Done, TabListFormatter.Render(snapshot));
+        }
+    }
+}

MinecraftClient/McClient.cs

@@ -38,6 +38,9 @@ namespace MinecraftClient
         private readonly Dictionary<Guid, PlayerInfo> onlinePlayers = new();
 
         private static bool commandsLoaded = false;
+        private readonly Lock tabListHeaderFooterLock = new();
+        private string tabListHeader = string.Empty;
+        private string tabListFooter = string.Empty;
 
         private readonly Queue<string> chatQueue = new();
         private static DateTime nextMessageSendTime = DateTime.MinValue;
@@ -1530,6 +1533,86 @@ namespace MinecraftClient
                 return null;
         }
 
+        internal TabListSnapshot GetTabListSnapshot()
+        {
+            List<(Guid Uuid, string Name, string DisplayName, int Gamemode, int Ping, int TabListOrder, bool Listed)> players;
+            lock (onlinePlayers)
+            {
+                players = onlinePlayers
+                    .Select(static pair => (
+                        pair.Key,
+                        pair.Value.Name,
+                        pair.Value.DisplayName ?? string.Empty,
+                        pair.Value.Gamemode,
+                        pair.Value.Ping,
+                        pair.Value.TabListOrder,
+                        pair.Value.Listed))
+                    .ToList();
+            }
+
+            Dictionary<string, PlayerTeam> teamSnapshot;
+            lock (teams)
+            {
+                teamSnapshot = teams.ToDictionary(
+                    static pair => pair.Key,
+                    static pair =>
+                    {
+                        var sourceTeam = pair.Value;
+                        var copy = new PlayerTeam
+                        {
+                            Name = sourceTeam.Name,
+                            DisplayName = sourceTeam.DisplayName,
+                            AllowFriendlyFire = sourceTeam.AllowFriendlyFire,
+                            SeeFriendlyInvisibles = sourceTeam.SeeFriendlyInvisibles,
+                            NameTagVisibility = sourceTeam.NameTagVisibility,
+                            CollisionRule = sourceTeam.CollisionRule,
+                            Color = sourceTeam.Color,
+                            Prefix = sourceTeam.Prefix,
+                            Suffix = sourceTeam.Suffix
+                        };
+
+                        foreach (string member in sourceTeam.Members)
+                            copy.Members.Add(member);
+
+                        return copy;
+                    },
+                    StringComparer.OrdinalIgnoreCase);
+            }
+
+            string header;
+            string footer;
+            lock (tabListHeaderFooterLock)
+            {
+                header = tabListHeader;
+                footer = tabListFooter;
+            }
+
+            var entries = players
+                .Select(player =>
+                {
+                    PlayerTeam? team = teamSnapshot.Values.FirstOrDefault(
+                        team => team.Members.Contains(player.Name));
+
+                    string displayName = !string.IsNullOrWhiteSpace(player.DisplayName)
+                        ? player.DisplayName
+                        : TabListFormatter.FormatTeamMemberName(player.Name, team);
+
+                    return new TabListEntry(
+                        player.Uuid,
+                        player.Name,
+                        displayName,
+                        team?.Name ?? string.Empty,
+                        !string.IsNullOrWhiteSpace(team?.DisplayName) ? team.DisplayName : team?.Name ?? string.Empty,
+                        player.Gamemode,
+                        player.Ping,
+                        player.TabListOrder,
+                        player.Listed);
+                })
+                .ToList();
+
+            return new TabListSnapshot(header, footer, entries);
+        }
+
         public PlayerKeyPair? GetPlayerKeyPair()
         {
             return playerKeyPair;
@@ -4165,6 +4248,11 @@ namespace MinecraftClient
         /// <param name="footer">Footer</param>
         public void OnTabListHeaderAndFooter(string header, string footer)
         {
+            lock (tabListHeaderFooterLock)
+            {
+                tabListHeader = header;
+                tabListFooter = footer;
+            }
             DispatchBotEvent(bot => bot.OnTabListHeaderAndFooter(header, footer));
         }
 

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -2137,7 +2137,7 @@ namespace MinecraftClient.Protocol.Handlers
 
                             // Consume all action-selected fields to keep entry boundaries aligned.
                             if (protocolVersion >= MC_1_21_2_Version && (actionBitset & 1 << 6) > 0) // Actions bit 6: update list order
-                                dataTypes.ReadNextVarInt(packetData);
+                                player.TabListOrder = dataTypes.ReadNextVarInt(packetData);
 
                             if (protocolVersion >= MC_1_21_4_Version && (actionBitset & 1 << 7) > 0) // Actions bit 7: update hat
                                 dataTypes.ReadNextBool(packetData);

MinecraftClient/Protocol/PlayerInfo.cs

@@ -22,6 +22,8 @@ namespace MinecraftClient.Protocol
 
         public bool Listed = true;
 
+        public int TabListOrder;
+
         // Entity info
 
         public Mapping.Entity? entity;
@@ -73,6 +75,7 @@ namespace MinecraftClient.Protocol
             Uuid = uuid;
             Gamemode = -1;
             Ping = 0;
+            TabListOrder = 0;
             lastMessageVerified = true;
             precedingSignature = null;
         }

MinecraftClient/Resources/ConfigComments/ConfigComments.resx

@@ -999,6 +999,12 @@ Note: This does NOT require a Bot Token, only an Application ID. Discord must be
   <data name="Console.Minimap.CaveMode" xml:space="preserve">
     <value>Cave rendering mode: "auto" (detect ceiling), "on" (always cave view), "off" (always surface view).</value>
   </data>
+  <data name="Console.TabList" xml:space="preserve">
+    <value>Settings for the /tab command and live TUI tab overlay.</value>
+  </data>
+  <data name="Console.TabList.ShowTeams" xml:space="preserve">
+    <value>Show a separate team column in /tab output. Disabled by default for a more vanilla-like player list.</value>
+  </data>
   <data name="Main.General.AuthlibUser" xml:space="preserve">
     <value>Yggdrasil authlib multi-user selection.</value>
   </data>

MinecraftClient/Resources/Translations/Translations.Designer.cs

@@ -4172,6 +4172,78 @@ namespace MinecraftClient {
                 return ResourceManager.GetString("cmd.list.players", resourceCulture);
             }
         }
+
+        /// <summary>
+        ///   Looks up a localized string similar to show a vanilla-like tab list. In TUI mode, opens a live overlay..
+        /// </summary>
+        internal static string cmd_tab_desc {
+            get {
+                return ResourceManager.GetString("cmd.tab.desc", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to No listed players are currently tracked..
+        /// </summary>
+        internal static string cmd_tab_no_players {
+            get {
+                return ResourceManager.GetString("cmd.tab.no_players", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to Tab list ({0} players).
+        /// </summary>
+        internal static string cmd_tab_title {
+            get {
+                return ResourceManager.GetString("cmd.tab.title", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to Ping.
+        /// </summary>
+        internal static string cmd_tab_column_ping {
+            get {
+                return ResourceManager.GetString("cmd.tab.column_ping", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to Team.
+        /// </summary>
+        internal static string cmd_tab_column_team {
+            get {
+                return ResourceManager.GetString("cmd.tab.column_team", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to Player.
+        /// </summary>
+        internal static string cmd_tab_column_player {
+            get {
+                return ResourceManager.GetString("cmd.tab.column_player", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to Live tab overlay opened..
+        /// </summary>
+        internal static string cmd_tab_tui_opened {
+            get {
+                return ResourceManager.GetString("cmd.tab.tui_opened", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to The tab overlay is not available right now..
+        /// </summary>
+        internal static string cmd_tab_tui_unavailable {
+            get {
+                return ResourceManager.GetString("cmd.tab.tui_unavailable", resourceCulture);
+            }
+        }
         
         /// <summary>
         ///   Looks up a localized string similar to log some text to the console..
@@ -4740,7 +4812,7 @@ namespace MinecraftClient {
                 return ResourceManager.GetString("cmd.teams.team_no_members", resourceCulture);
             }
         }
-        
+
         /// <summary>
         ///   Looks up a localized string similar to Place a block or open chest.
         /// </summary>
@@ -6890,6 +6962,15 @@ namespace MinecraftClient {
             }
         }
 
+        /// <summary>
+        ///   Looks up a localized string similar to Press Esc to close. Refreshes automatically..
+        /// </summary>
+        internal static string tui_tab_hint {
+            get {
+                return ResourceManager.GetString("tui.tab.hint", resourceCulture);
+            }
+        }
+
         /// <summary>
         ///   Looks up a localized string similar to You&apos;re now under {0} effect (Duration: {1})..
         /// </summary>

MinecraftClient/Resources/Translations/Translations.resx

@@ -1444,6 +1444,30 @@ Note that parameters in '[]' are optional.</value>
   <data name="cmd.list.players" xml:space="preserve">
     <value>PlayerList: {0}</value>
   </data>
+  <data name="cmd.tab.desc" xml:space="preserve">
+    <value>show a vanilla-like tab list. In TUI mode, opens a live overlay.</value>
+  </data>
+  <data name="cmd.tab.no_players" xml:space="preserve">
+    <value>No listed players are currently tracked.</value>
+  </data>
+  <data name="cmd.tab.title" xml:space="preserve">
+    <value>Tab list ({0} players)</value>
+  </data>
+  <data name="cmd.tab.column_ping" xml:space="preserve">
+    <value>Ping</value>
+  </data>
+  <data name="cmd.tab.column_team" xml:space="preserve">
+    <value>Team</value>
+  </data>
+  <data name="cmd.tab.column_player" xml:space="preserve">
+    <value>Player</value>
+  </data>
+  <data name="cmd.tab.tui_opened" xml:space="preserve">
+    <value>Live tab overlay opened.</value>
+  </data>
+  <data name="cmd.tab.tui_unavailable" xml:space="preserve">
+    <value>The tab overlay is not available right now.</value>
+  </data>
   <data name="cmd.log.desc" xml:space="preserve">
     <value>log some text to the console.</value>
   </data>
@@ -2434,6 +2458,9 @@ see item details.</value>
   <data name="tui.inventory.item_count" xml:space="preserve">
     <value>{0} items</value>
   </data>
+  <data name="tui.tab.hint" xml:space="preserve">
+    <value>Press Esc to close. Refreshes automatically.</value>
+  </data>
   <data name="bot.effect.gained" xml:space="preserve">
     <value>You're now under {0} effect (Duration: {1}).</value>
   </data>

MinecraftClient/Settings.cs

@@ -1111,6 +1111,9 @@ namespace MinecraftClient
                 [TomlPrecedingComment("$Console.Minimap$")]
                 public MinimapConfig Minimap = new();
 
+                [TomlPrecedingComment("$Console.TabList$")]
+                public TabListConfig TabList = new();
+
                 public void OnSettingUpdate()
                 {
                     var backend = ConsoleIO.Backend;
@@ -1302,6 +1305,13 @@ namespace MinecraftClient
                             Tui.MinimapControl.MinRefreshMs, Tui.MinimapControl.MaxRefreshMs);
                     }
                 }
+
+                [TomlDoNotInlineObject]
+                public class TabListConfig
+                {
+                    [TomlInlineComment("$Console.TabList.ShowTeams$")]
+                    public bool ShowTeams = false;
+                }
             }
         }
 

MinecraftClient/TabList/TabListFormatter.cs

@@ -0,0 +1,310 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using MinecraftClient.Mapping;
+using MinecraftClient.Scripting;
+
+namespace MinecraftClient
+{
+    internal sealed record TabListSnapshot(string Header, string Footer, IReadOnlyList<TabListEntry> Entries);
+
+    internal sealed record TabListEntry(
+        Guid Uuid,
+        string Name,
+        string DisplayName,
+        string TeamName,
+        string TeamDisplayName,
+        int Gamemode,
+        int Ping,
+        int TabListOrder,
+        bool Listed);
+
+    internal static class TabListFormatter
+    {
+        private const int MaxRowsPerColumn = 20;
+        private const int PingColumnWidth = 11;
+        private const int ColumnGapWidth = 4;
+
+        public static string FormatTeamMemberName(string playerName, PlayerTeam? team)
+        {
+            ArgumentException.ThrowIfNullOrWhiteSpace(playerName);
+
+            if (team is null)
+                return playerName;
+
+            var sb = new StringBuilder();
+            sb.Append(team.Prefix);
+
+            string colorCode = TeamColorToTag(team.Color);
+            if (!string.IsNullOrEmpty(colorCode))
+                sb.Append(colorCode);
+
+            sb.Append(playerName);
+            sb.Append(team.Suffix);
+            return sb.ToString();
+        }
+
+        public static string Render(TabListSnapshot snapshot, bool includeOverlayHint = false)
+        {
+            ArgumentNullException.ThrowIfNull(snapshot);
+            bool showTeams = Settings.Config.Console.TabList.ShowTeams;
+
+            var lines = new List<string>
+            {
+                $"§e{string.Format(Translations.cmd_tab_title, snapshot.Entries.Count)}§r"
+            };
+
+            AppendSection(lines, snapshot.Header);
+
+            var listedEntries = snapshot.Entries
+                .Where(static entry => entry.Listed && !string.IsNullOrWhiteSpace(entry.Name))
+                .OrderBy(static entry => entry.TabListOrder)
+                .ThenBy(static entry => entry.Gamemode == 3 ? 1 : 0)
+                .ThenBy(static entry => entry.TeamName, StringComparer.OrdinalIgnoreCase)
+                .ThenBy(static entry => entry.Name, StringComparer.OrdinalIgnoreCase)
+                .ToList();
+
+            if (listedEntries.Count == 0)
+            {
+                lines.Add($"§7{Translations.cmd_tab_no_players}§r");
+            }
+            else
+            {
+                lines.AddRange(BuildTableLines(listedEntries, showTeams));
+            }
+
+            AppendSection(lines, snapshot.Footer);
+
+            if (includeOverlayHint)
+            {
+                lines.Add(string.Empty);
+                lines.Add($"§8{Translations.tui_tab_hint}§r");
+            }
+
+            return string.Join('\n', lines);
+        }
+
+        private static void AppendSection(List<string> lines, string text)
+        {
+            if (string.IsNullOrWhiteSpace(text))
+                return;
+
+            foreach (string line in text.Replace("\r\n", "\n", StringComparison.Ordinal).Replace('\r', '\n').Split('\n'))
+            {
+                if (!string.IsNullOrWhiteSpace(line))
+                    lines.Add(line);
+            }
+        }
+
+        private static List<string> BuildTableLines(IReadOnlyList<TabListEntry> entries, bool showTeams)
+        {
+            int columns = 1;
+            int rows = entries.Count;
+            while (rows > MaxRowsPerColumn)
+            {
+                columns++;
+                rows = (entries.Count + columns - 1) / columns;
+            }
+
+            int teamColumnWidth = showTeams
+                ? Math.Max(
+                    GetVisibleLength(Translations.cmd_tab_column_team),
+                    entries.Max(static entry => GetVisibleLength(GetTeamLabel(entry))))
+                : 0;
+
+            string headerRow = BuildRow(
+                $"§8{Translations.cmd_tab_column_ping}§r",
+                showTeams ? $"§8{Translations.cmd_tab_column_team}§r" : null,
+                $"§8{Translations.cmd_tab_column_player}§r",
+                teamColumnWidth);
+
+            List<string> renderedRows = entries
+                .Select(entry => BuildRow(
+                    GetPingCell(entry.Ping),
+                    showTeams ? GetTeamLabel(entry) : null,
+                    GetPlayerLabel(entry),
+                    teamColumnWidth))
+                .ToList();
+
+            int[] columnWidths = new int[columns];
+            for (int column = 0; column < columns; column++)
+            {
+                int width = GetVisibleLength(headerRow);
+                for (int row = 0; row < rows; row++)
+                {
+                    int index = row + (column * rows);
+                    if (index >= renderedRows.Count)
+                        break;
+
+                    width = Math.Max(width, GetVisibleLength(renderedRows[index]));
+                }
+                columnWidths[column] = width;
+            }
+
+            var lines = new List<string> { CombineColumns(headerRow, rows, columns, columnWidths) };
+            for (int row = 0; row < rows; row++)
+                lines.Add(CombineColumns(renderedRows, row, rows, columns, columnWidths));
+
+            return lines;
+        }
+
+        private static string CombineColumns(string headerRow, int rows, int columns, IReadOnlyList<int> columnWidths)
+        {
+            var perColumnValues = new string[columns];
+            for (int column = 0; column < columns; column++)
+                perColumnValues[column] = headerRow;
+
+            return CombineColumns(perColumnValues, columnWidths);
+        }
+
+        private static string CombineColumns(IReadOnlyList<string> renderedRows, int row, int rows, int columns, IReadOnlyList<int> columnWidths)
+        {
+            var perColumnValues = new string[columns];
+            for (int column = 0; column < columns; column++)
+            {
+                int index = row + (column * rows);
+                perColumnValues[column] = index < renderedRows.Count ? renderedRows[index] : string.Empty;
+            }
+
+            return CombineColumns(perColumnValues, columnWidths);
+        }
+
+        private static string CombineColumns(IReadOnlyList<string> parts, IReadOnlyList<int> widths)
+        {
+            var sb = new StringBuilder();
+            for (int index = 0; index < parts.Count; index++)
+            {
+                if (index > 0)
+                    sb.Append(' ', ColumnGapWidth);
+
+                sb.Append(PadFormattedRight(parts[index], widths[index]));
+            }
+            return sb.ToString().TrimEnd();
+        }
+
+        private static string BuildRow(string pingCell, string? teamCell, string playerCell, int teamColumnWidth)
+        {
+            var sb = new StringBuilder();
+            sb.Append(PadFormattedRight(pingCell, PingColumnWidth));
+            sb.Append("  ");
+            if (!string.IsNullOrEmpty(teamCell))
+            {
+                sb.Append(PadFormattedRight(teamCell, teamColumnWidth));
+                sb.Append("  ");
+            }
+            sb.Append(playerCell);
+            return sb.ToString();
+        }
+
+        private static string GetPingCell(int ping)
+        {
+            string barColor;
+            int filledBars;
+
+            if (ping < 0)
+            {
+                barColor = "§8";
+                filledBars = 0;
+            }
+            else if (ping < 150)
+            {
+                barColor = "§a";
+                filledBars = 5;
+            }
+            else if (ping < 300)
+            {
+                barColor = "§e";
+                filledBars = 4;
+            }
+            else if (ping < 600)
+            {
+                barColor = "§6";
+                filledBars = 3;
+            }
+            else if (ping < 1000)
+            {
+                barColor = "§c";
+                filledBars = 2;
+            }
+            else
+            {
+                barColor = "§4";
+                filledBars = 1;
+            }
+
+            string numericPing = ping >= 0 ? $"{Math.Min(ping, 9999),4}ms" : " ???ms";
+            return $"{barColor}{new string('|', filledBars)}§8{new string('.', 5 - filledBars)}§r {numericPing}";
+        }
+
+        private static string GetTeamLabel(TabListEntry entry)
+        {
+            if (string.IsNullOrWhiteSpace(entry.TeamName))
+                return "§8-§r";
+
+            if (!string.IsNullOrWhiteSpace(entry.TeamDisplayName))
+                return entry.TeamDisplayName;
+
+            if (LooksLikeOpaqueTeamName(entry.TeamName))
+                return "§8-§r";
+
+            return entry.TeamName;
+        }
+
+        private static string GetPlayerLabel(TabListEntry entry)
+        {
+            string label = string.IsNullOrWhiteSpace(entry.DisplayName)
+                ? entry.Name
+                : entry.DisplayName;
+
+            if (entry.Gamemode == 3)
+                return $"§7§o{label}§r";
+
+            return label;
+        }
+
+        private static string PadFormattedRight(string text, int totalWidth)
+        {
+            int visibleLength = GetVisibleLength(text);
+            if (visibleLength >= totalWidth)
+                return text;
+
+            return text + new string(' ', totalWidth - visibleLength);
+        }
+
+        private static int GetVisibleLength(string text) => ChatBot.GetVerbatim(text).Length;
+
+        private static bool LooksLikeOpaqueTeamName(string text)
+        {
+            if (Guid.TryParse(text, out _))
+                return true;
+
+            int hyphenCount = text.Count(static ch => ch == '-');
+            if (text.Length >= 24 && hyphenCount >= 3)
+                return true;
+
+            return false;
+        }
+
+        private static string TeamColorToTag(int color) => color switch
+        {
+            0 => "§0",
+            1 => "§1",
+            2 => "§2",
+            3 => "§3",
+            4 => "§4",
+            5 => "§5",
+            6 => "§6",
+            7 => "§7",
+            8 => "§8",
+            9 => "§9",
+            10 => "§a",
+            11 => "§b",
+            12 => "§c",
+            13 => "§d",
+            14 => "§e",
+            15 => "§f",
+            _ => string.Empty
+        };
+    }
+}

MinecraftClient/Tui/TabListOverlay.cs

@@ -0,0 +1,92 @@
+using System;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Layout;
+using Avalonia.Media;
+using Avalonia.Threading;
+
+namespace MinecraftClient.Tui
+{
+    internal sealed class TabListOverlay : Border
+    {
+        private readonly McClient _handler;
+        private readonly ScrollViewer _scrollViewer;
+        private readonly DispatcherTimer _refreshTimer;
+
+        public TabListOverlay(McClient handler)
+        {
+            ArgumentNullException.ThrowIfNull(handler);
+            _handler = handler;
+
+            BorderBrush = Brushes.White;
+            BorderThickness = new Thickness(1);
+            Background = Brushes.Black;
+            Padding = new Thickness(1);
+            HorizontalAlignment = HorizontalAlignment.Stretch;
+            VerticalAlignment = VerticalAlignment.Stretch;
+            Focusable = true;
+
+            _scrollViewer = new ScrollViewer
+            {
+                HorizontalScrollBarVisibility = ScrollBarVisibility.Auto,
+                VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
+                Focusable = true,
+            };
+
+            Child = _scrollViewer;
+
+            _refreshTimer = new DispatcherTimer(TimeSpan.FromMilliseconds(500), DispatcherPriority.Background, static (_, _) => { })
+            {
+                IsEnabled = false
+            };
+            _refreshTimer.Tick += (_, _) => Refresh();
+
+            AttachedToVisualTree += (_, _) =>
+            {
+                AddHandler(KeyDownEvent, OnTunnelKeyDown, RoutingStrategies.Tunnel);
+                Refresh();
+                _refreshTimer.Start();
+                Focus();
+                Dispatcher.UIThread.Post(() => _scrollViewer.Focus(), DispatcherPriority.Input);
+            };
+
+            DetachedFromVisualTree += (_, _) =>
+            {
+                RemoveHandler(KeyDownEvent, OnTunnelKeyDown);
+                _refreshTimer.Stop();
+            };
+        }
+
+        private void OnTunnelKeyDown(object? sender, KeyEventArgs e)
+        {
+            if (e.Key != Key.Escape)
+                return;
+
+            TuiConsoleBackend.Instance?.DismissOverlay();
+            e.Handled = true;
+        }
+
+        protected override void OnKeyDown(KeyEventArgs e)
+        {
+            if (e.Key == Key.Escape)
+            {
+                TuiConsoleBackend.Instance?.DismissOverlay();
+                e.Handled = true;
+                return;
+            }
+
+            base.OnKeyDown(e);
+        }
+
+        private void Refresh()
+        {
+            string text = TabListFormatter.Render(_handler.GetTabListSnapshot(), includeOverlayHint: true);
+            var block = McColorParser.CreateColoredTextBlock(text, TextWrapping.NoWrap);
+            block.Margin = new Thickness(0);
+            _scrollViewer.Content = block;
+        }
+    }
+}