Hud refactor (#7202)

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>
Co-authored-by: Jezithyr <jmaster9999@gmail.com>
Co-authored-by: Jezithyr <Jezithyr@gmail.com>
Co-authored-by: Visne <39844191+Visne@users.noreply.github.com>
Co-authored-by: wrexbe <wrexbe@protonmail.com>
Co-authored-by: wrexbe <81056464+wrexbe@users.noreply.github.com>

Content.Client/UserInterface/BoundKeyHelpers.cs

@@ -0,0 +1,106 @@
+using System.Diagnostics.CodeAnalysis;
+using Robust.Client.Input;
+using Robust.Shared.Input;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface;
+
+public static class BoundKeyHelper
+{
+    public static string ShortKeyName(BoundKeyFunction keyFunction)
+    {
+        // need to use shortened key names so they fit in the buttons.
+        return TryGetShortKeyName(keyFunction, out var name) ? Loc.GetString(name) : " ";
+    }
+
+    private static string? DefaultShortKeyName(BoundKeyFunction keyFunction)
+    {
+        var name = FormattedMessage.EscapeText(IoCManager.Resolve<IInputManager>().GetKeyFunctionButtonString(keyFunction));
+        return name.Length > 3 ? null : name;
+    }
+
+    public static bool TryGetShortKeyName(BoundKeyFunction keyFunction, [NotNullWhen(true)] out string? name)
+    {
+        if (IoCManager.Resolve<IInputManager>().TryGetKeyBinding(keyFunction, out var binding))
+        {
+            // can't possibly fit a modifier key in the top button, so omit it
+            var key = binding.BaseKey;
+            if (binding.Mod1 != Keyboard.Key.Unknown || binding.Mod2 != Keyboard.Key.Unknown ||
+                binding.Mod3 != Keyboard.Key.Unknown)
+            {
+                name = null;
+                return false;
+            }
+
+            name = null;
+            name = key switch
+            {
+                Keyboard.Key.Apostrophe => "'",
+                Keyboard.Key.Comma => ",",
+                Keyboard.Key.Delete => "Del",
+                Keyboard.Key.Down => "Dwn",
+                Keyboard.Key.Escape => "Esc",
+                Keyboard.Key.Equal => "=",
+                Keyboard.Key.Home => "Hom",
+                Keyboard.Key.Insert => "Ins",
+                Keyboard.Key.Left => "Lft",
+                Keyboard.Key.Menu => "Men",
+                Keyboard.Key.Minus => "-",
+                Keyboard.Key.Num0 => "0",
+                Keyboard.Key.Num1 => "1",
+                Keyboard.Key.Num2 => "2",
+                Keyboard.Key.Num3 => "3",
+                Keyboard.Key.Num4 => "4",
+                Keyboard.Key.Num5 => "5",
+                Keyboard.Key.Num6 => "6",
+                Keyboard.Key.Num7 => "7",
+                Keyboard.Key.Num8 => "8",
+                Keyboard.Key.Num9 => "9",
+                Keyboard.Key.Pause => "||",
+                Keyboard.Key.Period => ".",
+                Keyboard.Key.Return => "Ret",
+                Keyboard.Key.Right => "Rgt",
+                Keyboard.Key.Slash => "/",
+                Keyboard.Key.Space => "Spc",
+                Keyboard.Key.Tab => "Tab",
+                Keyboard.Key.Tilde => "~",
+                Keyboard.Key.BackSlash => "\\",
+                Keyboard.Key.BackSpace => "Bks",
+                Keyboard.Key.LBracket => "[",
+                Keyboard.Key.MouseButton4 => "M4",
+                Keyboard.Key.MouseButton5 => "M5",
+                Keyboard.Key.MouseButton6 => "M6",
+                Keyboard.Key.MouseButton7 => "M7",
+                Keyboard.Key.MouseButton8 => "M8",
+                Keyboard.Key.MouseButton9 => "M9",
+                Keyboard.Key.MouseLeft => "ML",
+                Keyboard.Key.MouseMiddle => "MM",
+                Keyboard.Key.MouseRight => "MR",
+                Keyboard.Key.NumpadDecimal => "N.",
+                Keyboard.Key.NumpadDivide => "N/",
+                Keyboard.Key.NumpadEnter => "Ent",
+                Keyboard.Key.NumpadMultiply => "*",
+                Keyboard.Key.NumpadNum0 => "0",
+                Keyboard.Key.NumpadNum1 => "1",
+                Keyboard.Key.NumpadNum2 => "2",
+                Keyboard.Key.NumpadNum3 => "3",
+                Keyboard.Key.NumpadNum4 => "4",
+                Keyboard.Key.NumpadNum5 => "5",
+                Keyboard.Key.NumpadNum6 => "6",
+                Keyboard.Key.NumpadNum7 => "7",
+                Keyboard.Key.NumpadNum8 => "8",
+                Keyboard.Key.NumpadNum9 => "9",
+                Keyboard.Key.NumpadSubtract => "N-",
+                Keyboard.Key.PageDown => "PgD",
+                Keyboard.Key.PageUp => "PgU",
+                Keyboard.Key.RBracket => "]",
+                Keyboard.Key.SemiColon => ";",
+                _ => DefaultShortKeyName(keyFunction)
+            };
+            return name != null;
+        }
+
+        name = null;
+        return false;
+    }
+}

Content.Client/UserInterface/Controls/MenuButton.cs

@@ -0,0 +1,144 @@
+using System.Diagnostics.CodeAnalysis;
+using Robust.Client.Graphics;
+using Robust.Client.Input;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Controls;
+
+public sealed class MenuButton : ContainerButton
+{
+    [Dependency] private readonly IInputManager _inputManager = default!;
+    public const string StyleClassLabelTopButton = "topButtonLabel";
+    public const string StyleClassRedTopButton = "topButtonLabel";
+    private const float CustomTooltipDelay = 0.4f;
+
+    private static readonly Color ColorNormal = Color.FromHex("#7b7e9e");
+    private static readonly Color ColorRedNormal = Color.FromHex("#FEFEFE");
+    private static readonly Color ColorHovered = Color.FromHex("#9699bb");
+    private static readonly Color ColorRedHovered = Color.FromHex("#FFFFFF");
+    private static readonly Color ColorPressed = Color.FromHex("#789B8C");
+
+    private const float VertPad = 8f;
+    private Color NormalColor => HasStyleClass(StyleClassRedTopButton) ? ColorRedNormal : ColorNormal;
+    private Color HoveredColor => HasStyleClass(StyleClassRedTopButton) ? ColorRedHovered : ColorHovered;
+
+    private BoundKeyFunction _function;
+    private readonly BoxContainer _root;
+    private readonly TextureRect _buttonIcon;
+    private readonly Label _buttonLabel;
+
+    public string AppendStyleClass { set => AddStyleClass(value); }
+    public Texture? Icon { get => _buttonIcon.Texture; set => _buttonIcon.Texture = value; }
+
+    public BoundKeyFunction BoundKey
+    {
+        get => _function;
+        set
+        {
+            _function = value;
+            _buttonLabel.Text = BoundKeyHelper.ShortKeyName(value);
+        }
+    }
+
+    public BoxContainer ButtonRoot => _root;
+
+    public MenuButton()
+    {
+        IoCManager.InjectDependencies(this);
+        TooltipDelay = CustomTooltipDelay;
+        _buttonIcon = new TextureRect()
+        {
+            TextureScale = (0.5f, 0.5f),
+            HorizontalAlignment = HAlignment.Center,
+            VerticalAlignment = VAlignment.Center,
+            VerticalExpand = true,
+            Margin = new Thickness(0, VertPad),
+            ModulateSelfOverride = NormalColor,
+            Stretch = TextureRect.StretchMode.KeepCentered
+        };
+        _buttonLabel = new Label
+        {
+            Text = "",
+            HorizontalAlignment = HAlignment.Center,
+            ModulateSelfOverride = NormalColor,
+            StyleClasses = {StyleClassLabelTopButton}
+        };
+        _root = new BoxContainer
+        {
+            Orientation = BoxContainer.LayoutOrientation.Vertical,
+            Children =
+            {
+                _buttonIcon,
+                _buttonLabel
+            }
+        };
+        AddChild(_root);
+        ToggleMode = true;
+    }
+
+    protected override void EnteredTree()
+    {
+        _inputManager.OnKeyBindingAdded += OnKeyBindingChanged;
+        _inputManager.OnKeyBindingRemoved += OnKeyBindingChanged;
+        _inputManager.OnInputModeChanged += OnKeyBindingChanged;
+    }
+
+    protected override void ExitedTree()
+    {
+        _inputManager.OnKeyBindingAdded -= OnKeyBindingChanged;
+        _inputManager.OnKeyBindingRemoved -= OnKeyBindingChanged;
+        _inputManager.OnInputModeChanged -= OnKeyBindingChanged;
+    }
+
+
+    private void OnKeyBindingChanged(IKeyBinding obj)
+    {
+        _buttonLabel.Text = BoundKeyHelper.ShortKeyName(_function);
+    }
+
+    private void OnKeyBindingChanged()
+    {
+        _buttonLabel.Text = BoundKeyHelper.ShortKeyName(_function);
+    }
+
+    protected override void StylePropertiesChanged()
+    {
+        // colors of children depend on style, so ensure we update when style is changed
+        base.StylePropertiesChanged();
+        UpdateChildColors();
+    }
+
+    private void UpdateChildColors()
+    {
+        if (_buttonIcon == null || _buttonLabel == null) return;
+        switch (DrawMode)
+        {
+            case DrawModeEnum.Normal:
+                _buttonIcon.ModulateSelfOverride = NormalColor;
+                _buttonLabel.ModulateSelfOverride = NormalColor;
+                break;
+
+            case DrawModeEnum.Pressed:
+                _buttonIcon.ModulateSelfOverride = ColorPressed;
+                _buttonLabel.ModulateSelfOverride = ColorPressed;
+                break;
+
+            case DrawModeEnum.Hover:
+                _buttonIcon.ModulateSelfOverride = HoveredColor;
+                _buttonLabel.ModulateSelfOverride = HoveredColor;
+                break;
+
+            case DrawModeEnum.Disabled:
+                break;
+        }
+    }
+
+
+    protected override void DrawModeChanged()
+    {
+        base.DrawModeChanged();
+        UpdateChildColors();
+    }
+}

Content.Client/UserInterface/Controls/SlotButton.cs

@@ -0,0 +1,18 @@
+using Content.Client.Inventory;
+
+namespace Content.Client.UserInterface.Controls
+{
+    public sealed class SlotButton : SlotControl
+    {
+        public SlotButton(){}
+
+        public SlotButton(ClientInventorySystem.SlotData slotData)
+        {
+            ButtonTexturePath = slotData.TextureName;
+            Blocked = slotData.Blocked;
+            Highlight = slotData.Highlighted;
+            StorageTexturePath = "Slots/back";
+            SlotName = slotData.SlotName;
+        }
+    }
+}

Content.Client/UserInterface/Controls/SlotControl.cs

@@ -0,0 +1,236 @@
+using Content.Client.Cooldown;
+using Content.Client.UserInterface.Systems.Inventory.Controls;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+
+namespace Content.Client.UserInterface.Controls
+{
+    [Virtual]
+    public abstract class SlotControl : Control
+    {
+        private const string HighlightShader = "SelectionOutlineInrange";
+
+        public TextureRect ButtonRect { get; }
+        public TextureRect BlockedRect { get; }
+        public TextureRect HighlightRect { get; }
+        public SpriteView SpriteView { get; }
+        public SpriteView HoverSpriteView { get; }
+        public TextureButton StorageButton { get; }
+        public CooldownGraphic CooldownDisplay { get; }
+
+        public EntityUid? Entity => SpriteView.Sprite?.Owner;
+
+        private bool _slotNameSet;
+
+        private string _slotName = "";
+        public string SlotName
+        {
+            get => _slotName;
+            set
+            {
+                //this auto registers the button with it's parent container when it's set
+                if (_slotNameSet)
+                {
+                    Logger.Warning("Tried to set slotName after init for:" + Name);
+                    return;
+                }
+                _slotNameSet = true;
+                if (Parent is IItemslotUIContainer container)
+                {
+                    container.TryRegisterButton(this, value);
+                }
+                Name = "SlotButton_" + value;
+                _slotName = value;
+            }
+        }
+
+        public bool Highlight { get => HighlightRect.Visible; set => HighlightRect.Visible = value;}
+
+        public bool Blocked { get => BlockedRect.Visible; set => BlockedRect.Visible = value;}
+
+        public Texture BlockedTexture => Theme.ResolveTexture(BlockedTexturePath);
+
+        private string _blockedTexturePath = "";
+        public string BlockedTexturePath
+        {
+            get => _blockedTexturePath;
+            set
+            {
+                _blockedTexturePath = value;
+                BlockedRect.Texture = Theme.ResolveTexture(_blockedTexturePath);
+            }
+        }
+
+        public Texture ButtonTexture => Theme.ResolveTexture(ButtonTexturePath);
+
+        private string _buttonTexturePath = "";
+        public string ButtonTexturePath {
+            get => _buttonTexturePath;
+            set
+            {
+                _buttonTexturePath = value;
+                ButtonRect.Texture = Theme.ResolveTexture(_buttonTexturePath);
+            }
+        }
+
+        public Texture StorageTexture => Theme.ResolveTexture(StorageTexturePath);
+
+        private string _storageTexturePath = "";
+        public string StorageTexturePath
+        {
+            get => _buttonTexturePath;
+            set
+            {
+                _storageTexturePath = value;
+                StorageButton.TextureNormal = Theme.ResolveTexture(_storageTexturePath);
+            }
+        }
+
+        private string _highlightTexturePath = "";
+        public string HighlightTexturePath
+        {
+            get => _highlightTexturePath;
+            set
+            {
+                _highlightTexturePath = value;
+                HighlightRect.Texture = Theme.ResolveTexture(_highlightTexturePath);
+            }
+        }
+
+        public event Action<GUIBoundKeyEventArgs, SlotControl>? Pressed;
+        public event Action<GUIBoundKeyEventArgs, SlotControl>? Unpressed;
+        public event Action<GUIBoundKeyEventArgs, SlotControl>? StoragePressed;
+        public event Action<GUIMouseHoverEventArgs, SlotControl>? Hover;
+
+        public bool EntityHover => HoverSpriteView.Sprite != null;
+        public bool MouseIsHovering;
+
+        public SlotControl()
+        {
+            IoCManager.InjectDependencies(this);
+            Name = "SlotButton_null";
+            MinSize = (64, 64);
+            AddChild(ButtonRect = new TextureRect
+            {
+                TextureScale = (2, 2),
+                MouseFilter = MouseFilterMode.Stop
+            });
+            AddChild(HighlightRect = new TextureRect
+            {
+                Visible = false,
+                TextureScale = (2, 2),
+                MouseFilter = MouseFilterMode.Ignore
+            });
+
+            ButtonRect.OnKeyBindDown += OnButtonPressed;
+            ButtonRect.OnKeyBindUp += OnButtonUnpressed;
+
+            AddChild(SpriteView = new SpriteView
+            {
+                Scale = (2, 2),
+                OverrideDirection = Direction.South
+            });
+
+            AddChild(HoverSpriteView = new SpriteView
+            {
+                Scale = (2, 2),
+                OverrideDirection = Direction.South
+            });
+
+            AddChild(StorageButton = new TextureButton
+            {
+                Scale = (0.75f, 0.75f),
+                HorizontalAlignment = HAlignment.Right,
+                VerticalAlignment = VAlignment.Bottom,
+                Visible = false,
+            });
+
+            StorageButton.OnKeyBindDown += args =>
+            {
+                if (args.Function != EngineKeyFunctions.UIClick)
+                {
+                    OnButtonPressed(args);
+                }
+            };
+
+            StorageButton.OnPressed += OnStorageButtonPressed;
+
+            ButtonRect.OnMouseEntered += _ =>
+            {
+                MouseIsHovering = true;
+            };
+            ButtonRect.OnMouseEntered += OnButtonHover;
+
+            ButtonRect.OnMouseExited += _ =>
+            {
+                MouseIsHovering = false;
+                ClearHover();
+            };
+
+            AddChild(CooldownDisplay = new CooldownGraphic
+            {
+                Visible = false,
+            });
+
+            AddChild(BlockedRect = new TextureRect
+            {
+                TextureScale = (2, 2),
+                MouseFilter = MouseFilterMode.Stop,
+                Visible = false
+            });
+
+            HighlightTexturePath = "slot_highlight";
+            BlockedTexturePath = "blocked";
+        }
+
+        public void ClearHover()
+        {
+            if (!EntityHover)
+                return;
+
+            var tempQualifier = HoverSpriteView.Sprite;
+            if (tempQualifier != null)
+            {
+                IoCManager.Resolve<IEntityManager>().DeleteEntity(tempQualifier.Owner);
+            }
+
+            HoverSpriteView.Sprite = null;
+        }
+
+        private void OnButtonPressed(GUIBoundKeyEventArgs args)
+        {
+            Pressed?.Invoke(args, this);
+        }
+
+        private void OnButtonUnpressed(GUIBoundKeyEventArgs args)
+        {
+            Unpressed?.Invoke(args, this);
+        }
+
+        private void OnStorageButtonPressed(BaseButton.ButtonEventArgs args)
+        {
+            if (args.Event.Function == EngineKeyFunctions.UIClick)
+            {
+                StoragePressed?.Invoke(args.Event, this);
+            }
+            else
+            {
+                Pressed?.Invoke(args.Event, this);
+            }
+        }
+
+        private void OnButtonHover(GUIMouseHoverEventArgs args)
+        {
+            Hover?.Invoke(args, this);
+        }
+
+        protected override void OnThemeUpdated()
+        {
+            StorageButton.TextureNormal = Theme.ResolveTexture(_storageTexturePath);
+            ButtonRect.Texture = Theme.ResolveTexture(_buttonTexturePath);
+            HighlightRect.Texture = Theme.ResolveTexture(_highlightTexturePath);
+        }
+    }
+}

Content.Client/UserInterface/Screens/DefaultGameScreen.xaml

@@ -0,0 +1,20 @@
+<screens:DefaultGameScreen
+    xmlns="https://spacestation14.io"
+    xmlns:screens="clr-namespace:Content.Client.UserInterface.Screens"
+    xmlns:menuBar="clr-namespace:Content.Client.UserInterface.Systems.MenuBar.Widgets"
+    xmlns:actions="clr-namespace:Content.Client.UserInterface.Systems.Actions.Widgets"
+    xmlns:chat="clr-namespace:Content.Client.UserInterface.Systems.Chat.Widgets"
+    xmlns:alerts="clr-namespace:Content.Client.UserInterface.Systems.Alerts.Widgets"
+    xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Ghost.Widgets"
+    xmlns:hotbar="clr-namespace:Content.Client.UserInterface.Systems.Hotbar.Widgets"
+    Name="DefaultHud"
+    VerticalExpand="False"
+    VerticalAlignment="Bottom"
+    HorizontalAlignment="Center">
+    <menuBar:GameTopMenuBar Name="TopBar" Access="Protected" />
+    <widgets:GhostGui Name="Ghost" Access="Protected" />
+    <hotbar:HotbarGui Name="Hotbar" Access="Protected" />
+    <actions:ActionsBar Name="Actions" Access="Protected" />
+    <chat:ResizableChatBox Name="Chat" Access="Protected" Main="True" />
+    <alerts:AlertsUI Name="Alerts" Access="Protected" />
+</screens:DefaultGameScreen>

Content.Client/UserInterface/Screens/DefaultGameScreen.xaml.cs

@@ -0,0 +1,31 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Screens;
+
+[GenerateTypedNameReferences]
+public sealed partial class DefaultGameScreen : UIScreen
+{
+    public DefaultGameScreen()
+    {
+        RobustXamlLoader.Load(this);
+
+        AutoscaleMaxResolution = new Vector2i(1080, 770);
+
+        SetAnchorAndMarginPreset(TopBar, LayoutPreset.TopLeft, margin: 10);
+        SetAnchorAndMarginPreset(Actions, LayoutPreset.BottomLeft, margin: 10);
+        SetAnchorAndMarginPreset(Ghost, LayoutPreset.BottomWide, margin: 80);
+        SetAnchorAndMarginPreset(Hotbar, LayoutPreset.BottomWide, margin: 5);
+        SetAnchorAndMarginPreset(Chat, LayoutPreset.TopRight, margin: 10);
+        SetAnchorAndMarginPreset(Alerts, LayoutPreset.TopRight, margin: 10);
+
+        Chat.OnResized += ChatOnResized;
+    }
+
+    private void ChatOnResized()
+    {
+        var marginBottom = Chat.GetValue<float>(MarginBottomProperty);
+        SetMarginTop(Alerts, marginBottom);
+    }
+}

Content.Client/UserInterface/Systems/Actions/ActionUIController.cs

@@ -0,0 +1,676 @@
+using System.Linq;
+using System.Runtime.InteropServices;
+using Content.Client.Actions;
+using Content.Client.DragDrop;
+using Content.Client.Gameplay;
+using Content.Client.Hands;
+using Content.Client.Outline;
+using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Actions.Controls;
+using Content.Client.UserInterface.Systems.Actions.Widgets;
+using Content.Client.UserInterface.Systems.Actions.Windows;
+using Content.Shared.Actions;
+using Content.Shared.Actions.ActionTypes;
+using Content.Shared.Input;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.Utility;
+using Robust.Shared.Input;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+using static Content.Client.Actions.ActionsSystem;
+using static Content.Client.UserInterface.Systems.Actions.Windows.ActionsWindow;
+using static Robust.Client.UserInterface.Control;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+using static Robust.Client.UserInterface.Controls.LineEdit;
+using static Robust.Client.UserInterface.Controls.MultiselectOptionButton<
+    Content.Client.UserInterface.Systems.Actions.Windows.ActionsWindow.Filters>;
+using static Robust.Client.UserInterface.Controls.TextureRect;
+using static Robust.Shared.Input.Binding.PointerInputCmdHandler;
+
+namespace Content.Client.UserInterface.Systems.Actions;
+
+public sealed class ActionUIController : UIController, IOnStateChanged<GameplayState>, IOnSystemChanged<ActionsSystem>
+{
+    [Dependency] private readonly IEntityManager _entities = default!;
+    [Dependency] private readonly IOverlayManager _overlays = default!;
+
+    [UISystemDependency] private readonly ActionsSystem _actionsSystem = default!;
+    [UISystemDependency] private readonly InteractionOutlineSystem _interactionOutline = default!;
+    [UISystemDependency] private readonly TargetOutlineSystem _targetOutline = default!;
+
+    private const int DefaultPageIndex = 0;
+    private ActionButtonContainer? _container;
+    private readonly List<ActionPage> _pages = new();
+    private int _currentPageIndex = DefaultPageIndex;
+    private readonly DragDropHelper<ActionButton> _menuDragHelper;
+    private readonly TextureRect _dragShadow;
+    private ActionsWindow? _window;
+
+    private ActionsBar? _actionsBar;
+    private MenuButton? _actionButton;
+    private ActionPage CurrentPage => _pages[_currentPageIndex];
+
+    public bool IsDragging => _menuDragHelper.IsDragging;
+
+    /// <summary>
+    /// Action slot we are currently selecting a target for.
+    /// </summary>
+    public ActionButton? SelectingTargetFor { get; private set; }
+
+    public ActionUIController()
+    {
+        _menuDragHelper = new DragDropHelper<ActionButton>(OnMenuBeginDrag, OnMenuContinueDrag, OnMenuEndDrag);
+        _dragShadow = new TextureRect
+        {
+            MinSize = (64, 64),
+            Stretch = StretchMode.Scale,
+            Visible = false,
+            SetSize = (64, 64),
+            MouseFilter = MouseFilterMode.Ignore
+        };
+
+        var pageCount = ContentKeyFunctions.GetLoadoutBoundKeys().Length;
+        var buttonCount = ContentKeyFunctions.GetHotbarBoundKeys().Length;
+        for (var i = 0; i < pageCount; i++)
+        {
+            var page = new ActionPage(buttonCount);
+            _pages.Add(page);
+        }
+    }
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_window == null);
+        _window = UIManager.CreateWindow<ActionsWindow>();
+        _actionButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().ActionButton;
+        LayoutContainer.SetAnchorPreset(_window, LayoutContainer.LayoutPreset.CenterTop);
+        _window.OnClose += () => { _actionButton.Pressed = false; };
+        _window.OnOpen += () => { _actionButton.Pressed = true; };
+        _window.ClearButton.OnPressed += OnClearPressed;
+        _window.SearchBar.OnTextChanged += OnSearchChanged;
+        _window.FilterButton.OnItemSelected += OnFilterSelected;
+        UpdateFilterLabel();
+        SearchAndDisplay();
+
+        _actionsBar = UIManager.GetActiveUIWidget<ActionsBar>();
+        _actionsBar.PageButtons.LeftArrow.OnPressed += OnLeftArrowPressed;
+        _actionsBar.PageButtons.RightArrow.OnPressed += OnRightArrowPressed;
+        _actionButton.OnPressed += ActionButtonPressed;
+        _dragShadow.Orphan();
+        UIManager.PopupRoot.AddChild(_dragShadow);
+
+        var builder = CommandBinds.Builder;
+        var hotbarKeys = ContentKeyFunctions.GetHotbarBoundKeys();
+        for (var i = 0; i < hotbarKeys.Length; i++)
+        {
+            var boundId = i; // This is needed, because the lambda captures it.
+            var boundKey = hotbarKeys[i];
+            builder = builder.Bind(boundKey, new PointerInputCmdHandler((in PointerInputCmdArgs args) =>
+            {
+                if (args.State != BoundKeyState.Up)
+                    return false;
+
+                TriggerAction(boundId);
+                return true;
+            }, false));
+        }
+
+        var loadoutKeys = ContentKeyFunctions.GetLoadoutBoundKeys();
+        for (var i = 0; i < loadoutKeys.Length; i++)
+        {
+            var boundId = i; // This is needed, because the lambda captures it.
+            var boundKey = loadoutKeys[i];
+            builder = builder.Bind(boundKey,
+                InputCmdHandler.FromDelegate(_ => ChangePage(boundId)));
+        }
+
+        builder
+            .Bind(ContentKeyFunctions.OpenActionsMenu,
+                InputCmdHandler.FromDelegate(_ => ToggleWindow()))
+            .Register<ActionUIController>();
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_window != null)
+        {
+            _window.Dispose();
+            _window = null;
+        }
+
+        if (_actionsBar != null)
+        {
+            _actionsBar.PageButtons.LeftArrow.OnPressed -= OnLeftArrowPressed;
+            _actionsBar.PageButtons.RightArrow.OnPressed -= OnRightArrowPressed;
+        }
+
+        if (_actionButton != null)
+        {
+            _actionButton.OnPressed -= ActionButtonPressed;
+            _actionButton.Pressed = false;
+        }
+
+        CommandBinds.Unregister<ActionUIController>();
+    }
+
+    private void TriggerAction(int index)
+    {
+        if (CurrentPage[index] is not { } type)
+            return;
+
+        _actionsSystem.TriggerAction(type);
+    }
+
+    private void ChangePage(int index)
+    {
+        var lastPage = _pages.Count - 1;
+        if (index < 0)
+        {
+            index = lastPage;
+        }
+        else if (index > lastPage)
+        {
+            index = 0;
+        }
+
+        _currentPageIndex = index;
+        var page = _pages[_currentPageIndex];
+        _container?.SetActionData(page);
+
+        _actionsBar!.PageButtons.Label.Text = $"{_currentPageIndex + 1}";
+    }
+
+    private void OnLeftArrowPressed(ButtonEventArgs args)
+    {
+        ChangePage(_currentPageIndex - 1);
+    }
+
+    private void OnRightArrowPressed(ButtonEventArgs args)
+    {
+        ChangePage(_currentPageIndex + 1);
+    }
+
+    private void ActionButtonPressed(ButtonEventArgs args)
+    {
+        ToggleWindow();
+    }
+
+    private void ToggleWindow()
+    {
+        if (_window == null)
+            return;
+
+        if (_window.IsOpen)
+        {
+            _window.Close();
+            return;
+        }
+
+        _window.Open();
+    }
+
+    private void UpdateFilterLabel()
+    {
+        if (_window == null)
+            return;
+
+        if (_window.FilterButton.SelectedKeys.Count == 0)
+        {
+            _window.FilterLabel.Visible = false;
+        }
+        else
+        {
+            _window.FilterLabel.Visible = true;
+            _window.FilterLabel.Text = Loc.GetString("ui-actionmenu-filter-label",
+                ("selectedLabels", string.Join(", ", _window.FilterButton.SelectedLabels)));
+        }
+    }
+
+    private bool MatchesFilter(ActionType action, Filters filter)
+    {
+        return filter switch
+        {
+            Filters.Enabled => action.Enabled,
+            Filters.Item => action.Provider != null && action.Provider != _actionsSystem.PlayerActions?.Owner,
+            Filters.Innate => action.Provider == null || action.Provider == _actionsSystem.PlayerActions?.Owner,
+            Filters.Instant => action is InstantAction,
+            Filters.Targeted => action is TargetedAction,
+            _ => throw new ArgumentOutOfRangeException(nameof(filter), filter, null)
+        };
+    }
+
+    private void ClearList()
+    {
+        _window?.ResultsGrid.RemoveAllChildren();
+    }
+
+    private void PopulateActions(IEnumerable<ActionType> actions)
+    {
+        if (_window == null)
+            return;
+
+        ClearList();
+
+        foreach (var action in actions)
+        {
+            var button = new ActionButton {Locked = true};
+
+            button.UpdateData(_entities, action);
+            button.ActionPressed += OnWindowActionPressed;
+            button.ActionUnpressed += OnWindowActionUnPressed;
+            button.ActionFocusExited += OnWindowActionFocusExisted;
+
+            _window.ResultsGrid.AddChild(button);
+        }
+    }
+
+    private void SearchAndDisplay()
+    {
+        if (_window == null)
+            return;
+
+        var search = _window.SearchBar.Text;
+        var filters = _window.FilterButton.SelectedKeys;
+
+        IEnumerable<ActionType>? actions = _actionsSystem.PlayerActions?.Actions;
+        actions ??= Array.Empty<ActionType>();
+
+        if (filters.Count == 0 && string.IsNullOrWhiteSpace(search))
+        {
+            PopulateActions(actions);
+            return;
+        }
+
+        actions = actions.Where(action =>
+        {
+            if (filters.Count > 0 && filters.Any(filter => !MatchesFilter(action, filter)))
+                return false;
+
+            if (action.Keywords.Any(keyword => search.Contains(keyword, StringComparison.OrdinalIgnoreCase)))
+                return true;
+
+            if (action.DisplayName.Contains((string) search, StringComparison.OrdinalIgnoreCase))
+                return true;
+
+            if (action.Provider == null || action.Provider == _actionsSystem.PlayerActions?.Owner)
+                return false;
+
+            var name = _entities.GetComponent<MetaDataComponent>(action.Provider.Value).EntityName;
+            return name.Contains((string) search, StringComparison.OrdinalIgnoreCase);
+        });
+
+        PopulateActions(actions);
+    }
+
+    private void SetAction(ActionButton button, ActionType? type)
+    {
+        int position;
+
+        if (type == null)
+        {
+            button.ClearData();
+            if (_container?.TryGetButtonIndex(button, out position) ?? false)
+            {
+                CurrentPage[position] = type;
+            }
+
+            return;
+        }
+
+        if (button.TryReplaceWith(_entities, type) &&
+            _container != null &&
+            _container.TryGetButtonIndex(button, out position))
+        {
+            CurrentPage[position] = type;
+        }
+    }
+
+    private void DragAction()
+    {
+        if (UIManager.CurrentlyHovered is ActionButton button)
+        {
+            if (!_menuDragHelper.IsDragging || _menuDragHelper.Dragged?.Action is not { } type)
+            {
+                _menuDragHelper.EndDrag();
+                return;
+            }
+
+            SetAction(button, type);
+        }
+
+        if (_menuDragHelper.Dragged is {Parent: ActionButtonContainer} old)
+        {
+            SetAction(old, null);
+        }
+
+        _menuDragHelper.EndDrag();
+    }
+
+    private void OnClearPressed(ButtonEventArgs args)
+    {
+        if (_window == null)
+            return;
+
+        _window.SearchBar.Clear();
+        _window.FilterButton.DeselectAll();
+        UpdateFilterLabel();
+        SearchAndDisplay();
+    }
+
+    private void OnSearchChanged(LineEditEventArgs args)
+    {
+        SearchAndDisplay();
+    }
+
+    private void OnFilterSelected(ItemPressedEventArgs args)
+    {
+        UpdateFilterLabel();
+        SearchAndDisplay();
+    }
+
+    private void OnWindowActionPressed(GUIBoundKeyEventArgs args, ActionButton action)
+    {
+        if (args.Function != EngineKeyFunctions.UIClick && args.Function != EngineKeyFunctions.Use)
+            return;
+
+        _menuDragHelper.MouseDown(action);
+        args.Handle();
+    }
+
+    private void OnWindowActionUnPressed(GUIBoundKeyEventArgs args, ActionButton dragged)
+    {
+        if (args.Function != EngineKeyFunctions.UIClick && args.Function != EngineKeyFunctions.Use)
+            return;
+
+        DragAction();
+        args.Handle();
+    }
+
+    private void OnWindowActionFocusExisted(ActionButton button)
+    {
+        _menuDragHelper.EndDrag();
+    }
+
+    private void OnActionPressed(GUIBoundKeyEventArgs args, ActionButton button)
+    {
+        if (args.Function == EngineKeyFunctions.UIClick)
+        {
+            _menuDragHelper.MouseDown(button);
+            args.Handle();
+        }
+        else if (args.Function == EngineKeyFunctions.UIRightClick)
+        {
+            SetAction(button, null);
+            args.Handle();
+        }
+    }
+
+    private void OnActionUnpressed(GUIBoundKeyEventArgs args, ActionButton button)
+    {
+        if (args.Function != EngineKeyFunctions.UIClick)
+            return;
+
+        if (UIManager.CurrentlyHovered == button)
+        {
+            if (button.Action is not InstantAction)
+            {
+                // for target actions, we go into "select target" mode, we don't
+                // message the server until we actually pick our target.
+
+                // if we're clicking the same thing we're already targeting for, then we simply cancel
+                // targeting
+                ToggleTargeting(button);
+                return;
+            }
+
+            _actionsSystem.TriggerAction(button.Action);
+            _menuDragHelper.EndDrag();
+        }
+        else
+        {
+            DragAction();
+        }
+
+        args.Handle();
+    }
+
+    private bool OnMenuBeginDrag()
+    {
+        _dragShadow.Texture = _menuDragHelper.Dragged?.IconTexture;
+        LayoutContainer.SetPosition(_dragShadow, UIManager.MousePositionScaled.Position - (32, 32));
+        return true;
+    }
+
+    private bool OnMenuContinueDrag(float frameTime)
+    {
+        LayoutContainer.SetPosition(_dragShadow, UIManager.MousePositionScaled.Position - (32, 32));
+        _dragShadow.Visible = true;
+        return true;
+    }
+
+    private void OnMenuEndDrag()
+    {
+        _dragShadow.Visible = false;
+    }
+
+    public void RegisterActionContainer(ActionButtonContainer container)
+    {
+        if (_container != null)
+        {
+            Logger.Warning("Action container already defined for UI controller");
+            return;
+        }
+
+        _container = container;
+        _container.ActionPressed += OnActionPressed;
+        _container.ActionUnpressed += OnActionUnpressed;
+    }
+
+    public void ClearActions()
+    {
+        _container?.ClearActionData();
+    }
+
+    private void AssignSlots(List<SlotAssignment> assignments)
+    {
+        foreach (ref var assignment in CollectionsMarshal.AsSpan(assignments))
+        {
+            _pages[assignment.Hotbar][assignment.Slot] = assignment.Action;
+        }
+
+        _container?.SetActionData(_pages[_currentPageIndex]);
+    }
+
+    public void RemoveActionContainer()
+    {
+        _container = null;
+    }
+
+    public void OnSystemLoaded(ActionsSystem system)
+    {
+        _actionsSystem.OnLinkActions += OnComponentLinked;
+        _actionsSystem.OnUnlinkActions += OnComponentUnlinked;
+        _actionsSystem.ClearAssignments += ClearActions;
+        _actionsSystem.AssignSlot += AssignSlots;
+    }
+
+    public void OnSystemUnloaded(ActionsSystem system)
+    {
+        _actionsSystem.OnLinkActions -= OnComponentLinked;
+        _actionsSystem.OnUnlinkActions -= OnComponentUnlinked;
+        _actionsSystem.ClearAssignments -= ClearActions;
+        _actionsSystem.AssignSlot -= AssignSlots;
+    }
+
+    public override void FrameUpdate(FrameEventArgs args)
+    {
+        _menuDragHelper.Update(args.DeltaSeconds);
+    }
+
+    private void OnComponentLinked(ActionsComponent component)
+    {
+        LoadDefaultActions(component);
+        _container?.SetActionData(_pages[DefaultPageIndex]);
+    }
+
+    private void OnComponentUnlinked()
+    {
+        _container?.ClearActionData();
+        //TODO: Clear button data
+    }
+
+    private void LoadDefaultActions(ActionsComponent component)
+    {
+        var actions = component.Actions.Where(actionType => actionType.AutoPopulate).ToList();
+
+        var offset = 0;
+        var totalPages = _pages.Count;
+        var pagesLeft = totalPages;
+        var currentPage = DefaultPageIndex;
+        while (pagesLeft > 0)
+        {
+            var page = _pages[currentPage];
+            var pageSize = page.Size;
+
+            for (var slot = 0; slot < pageSize; slot++)
+            {
+                var actionIndex = slot + offset;
+                if (actionIndex < actions.Count)
+                {
+                    page[slot] = actions[slot + offset];
+                }
+                else
+                {
+                    page[slot] = null;
+                }
+            }
+
+            offset += pageSize;
+            currentPage++;
+            if (currentPage == totalPages)
+            {
+                currentPage = 0;
+            }
+
+            pagesLeft--;
+        }
+    }
+
+    /// <summary>
+    /// If currently targeting with this slot, stops targeting.
+    /// If currently targeting with no slot or a different slot, switches to
+    /// targeting with the specified slot.
+    /// </summary>
+    /// <param name="slot"></param>
+    public void ToggleTargeting(ActionButton slot)
+    {
+        if (SelectingTargetFor == slot)
+        {
+            StopTargeting();
+            return;
+        }
+
+        StartTargeting(slot);
+    }
+
+    /// <summary>
+    /// Puts us in targeting mode, where we need to pick either a target point or entity
+    /// </summary>
+    private void StartTargeting(ActionButton actionSlot)
+    {
+        if (actionSlot.Action == null)
+            return;
+
+        // If we were targeting something else we should stop
+        StopTargeting();
+
+        SelectingTargetFor = actionSlot;
+
+        if (actionSlot.Action is not TargetedAction action)
+            return;
+
+        // override "held-item" overlay
+        if (action.TargetingIndicator && _overlays.TryGetOverlay<ShowHandItemOverlay>(out var handOverlay))
+        {
+            if (action.ItemIconStyle == ItemActionIconStyle.BigItem && action.Provider != null)
+            {
+                handOverlay.EntityOverride = action.Provider;
+            }
+            else if (action.Toggled && action.IconOn != null)
+                handOverlay.IconOverride = action.IconOn.Frame0();
+            else if (action.Icon != null)
+                handOverlay.IconOverride = action.Icon.Frame0();
+        }
+
+        // TODO: allow world-targets to check valid positions. E.g., maybe:
+        // - Draw a red/green ghost entity
+        // - Add a yes/no checkmark where the HandItemOverlay usually is
+
+        // Highlight valid entity targets
+        if (action is not EntityTargetAction entityAction)
+            return;
+
+        Func<EntityUid, bool>? predicate = null;
+
+        if (!entityAction.CanTargetSelf)
+            predicate = e => e != entityAction.AttachedEntity;
+
+        var range = entityAction.CheckCanAccess ? action.Range : -1;
+
+        _interactionOutline.SetEnabled(false);
+        _targetOutline.Enable(range, entityAction.CheckCanAccess, predicate, entityAction.Whitelist, null);
+    }
+
+    /// <summary>
+    /// Switch out of targeting mode if currently selecting target for an action
+    /// </summary>
+    public void StopTargeting()
+    {
+        if (SelectingTargetFor == null)
+            return;
+
+        SelectingTargetFor = null;
+        _targetOutline.Disable();
+        _interactionOutline.SetEnabled(true);
+
+        if (!_overlays.TryGetOverlay<ShowHandItemOverlay>(out var handOverlay) || handOverlay == null)
+            return;
+
+        handOverlay.IconOverride = null;
+        handOverlay.EntityOverride = null;
+    }
+
+
+    //TODO: Serialize this shit
+    private sealed class ActionPage
+    {
+        private readonly ActionType?[] _data;
+
+        public ActionPage(int size)
+        {
+            _data = new ActionType?[size];
+        }
+
+        public ActionType? this[int index]
+        {
+            get => _data[index];
+            set => _data[index] = value;
+        }
+
+        public static implicit operator ActionType?[](ActionPage p)
+        {
+            return p._data.ToArray();
+        }
+
+        public void Clear()
+        {
+            Array.Fill(_data, null);
+        }
+
+        public int Size => _data.Length;
+    }
+}

Content.Client/UserInterface/Systems/Actions/Controls/ActionButton.cs

@@ -0,0 +1,297 @@
+using Content.Client.Actions.UI;
+using Content.Client.Cooldown;
+using Content.Client.Stylesheets;
+using Content.Shared.Actions.ActionTypes;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.Utility;
+using Robust.Shared.Input;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Systems.Actions.Controls;
+
+public sealed class ActionButton : Control
+{
+    private ActionUIController Controller => UserInterfaceManager.GetUIController<ActionUIController>();
+    private bool _beingHovered;
+    private bool _depressed;
+    private bool _toggled;
+
+    public BoundKeyFunction? KeyBind
+    {
+        set
+        {
+            _keybind = value;
+            if (_keybind != null)
+            {
+                Label.Text = BoundKeyHelper.ShortKeyName(_keybind.Value);
+            }
+        }
+    }
+
+    private BoundKeyFunction? _keybind;
+
+    public readonly TextureRect Button;
+    public readonly PanelContainer HighlightRect;
+    public readonly TextureRect Icon;
+    public readonly Label Label;
+    public readonly SpriteView Sprite;
+    public readonly CooldownGraphic Cooldown;
+
+    public Texture? IconTexture
+    {
+        get => Icon.Texture;
+        private set => Icon.Texture = value;
+    }
+
+    public ActionType? Action { get; private set; }
+    public bool Locked { get; set; }
+
+    public event Action<GUIBoundKeyEventArgs, ActionButton>? ActionPressed;
+    public event Action<GUIBoundKeyEventArgs, ActionButton>? ActionUnpressed;
+    public event Action<ActionButton>? ActionFocusExited;
+
+    public ActionButton()
+    {
+        MouseFilter = MouseFilterMode.Pass;
+        Button = new TextureRect
+        {
+            Name = "Button",
+            TextureScale = new Vector2(2, 2)
+        };
+        HighlightRect = new PanelContainer
+        {
+            StyleClasses = {StyleNano.StyleClassHandSlotHighlight},
+            MinSize = (32, 32),
+            Visible = false
+        };
+        Icon = new TextureRect
+        {
+            Name = "Icon",
+            TextureScale = new Vector2(2, 2),
+            MaxSize = (64, 64),
+            Stretch = TextureRect.StretchMode.Scale
+        };
+        Label = new Label
+        {
+            Name = "Label",
+            HorizontalAlignment = HAlignment.Left,
+            VerticalAlignment = VAlignment.Top,
+            Margin = new Thickness(5, 0, 0, 0)
+        };
+        Sprite = new SpriteView
+        {
+            Name = "Sprite",
+            OverrideDirection = Direction.South
+        };
+        Cooldown = new CooldownGraphic {Visible = false};
+
+        AddChild(Button);
+        AddChild(HighlightRect);
+        AddChild(Icon);
+        AddChild(Label);
+        AddChild(Sprite);
+        AddChild(Cooldown);
+
+        Button.Modulate = new Color(255, 255, 255, 150);
+        Icon.Modulate = new Color(255, 255, 255, 150);
+
+        OnThemeUpdated();
+        OnThemeUpdated();
+
+        OnKeyBindDown += args =>
+        {
+            Depress(args, true);
+            OnPressed(args);
+        };
+        OnKeyBindUp += args =>
+        {
+            Depress(args, false);
+            OnUnpressed(args);
+        };
+
+        TooltipDelay = 0.5f;
+        TooltipSupplier = SupplyTooltip;
+    }
+
+    protected override void OnThemeUpdated()
+    {
+        Button.Texture = Theme.ResolveTexture("SlotBackground");
+        Label.FontColorOverride = Theme.ResolveColorOrSpecified("whiteText");
+    }
+
+    private void OnPressed(GUIBoundKeyEventArgs args)
+    {
+        ActionPressed?.Invoke(args, this);
+    }
+
+    private void OnUnpressed(GUIBoundKeyEventArgs args)
+    {
+        ActionUnpressed?.Invoke(args, this);
+    }
+
+    private Control? SupplyTooltip(Control sender)
+    {
+        if (Action == null)
+            return null;
+
+        var name = FormattedMessage.FromMarkupPermissive(Loc.GetString(Action.DisplayName));
+        var decr = FormattedMessage.FromMarkupPermissive(Loc.GetString(Action.Description));
+
+        return new ActionAlertTooltip(name, decr);
+    }
+
+    protected override void ControlFocusExited()
+    {
+        ActionFocusExited?.Invoke(this);
+    }
+
+    public bool TryReplaceWith(IEntityManager entityManager, ActionType action)
+    {
+        if (Locked)
+        {
+            return false;
+        }
+
+        UpdateData(entityManager, action);
+        return true;
+    }
+
+    public void UpdateData(IEntityManager entityManager, ActionType action)
+    {
+        Action = action;
+
+        if (action.Icon != null)
+        {
+            IconTexture = GetIcon();
+            Sprite.Sprite = null;
+            return;
+        }
+
+        if (action.Provider == null ||
+            !entityManager.TryGetComponent(action.Provider.Value, out SpriteComponent? sprite))
+        {
+            return;
+        }
+
+        IconTexture = null;
+        Sprite.Sprite = sprite;
+    }
+
+    public void ClearData()
+    {
+        Action = null;
+        IconTexture = null;
+        Sprite.Sprite = null;
+        Cooldown.Visible = false;
+        Cooldown.Progress = 1;
+    }
+
+    private Texture? GetIcon()
+    {
+        if (Action == null)
+            return null;
+
+        return _toggled ? (Action.IconOn ?? Action.Icon)?.Frame0() : Action.Icon?.Frame0();
+    }
+
+    protected override void FrameUpdate(FrameEventArgs args)
+    {
+        base.FrameUpdate(args);
+
+        if (Action?.Cooldown != null)
+        {
+            Cooldown.FromTime(Action.Cooldown.Value.Start, Action.Cooldown.Value.End);
+        }
+
+        if (Action != null && _toggled != Action.Toggled)
+        {
+            _toggled = Action.Toggled;
+            IconTexture = GetIcon();
+        }
+    }
+
+    protected override void MouseEntered()
+    {
+        base.MouseEntered();
+
+        _beingHovered = true;
+        DrawModeChanged();
+    }
+
+    protected override void MouseExited()
+    {
+        base.MouseExited();
+
+        _beingHovered = false;
+        DrawModeChanged();
+    }
+
+    /// <summary>
+    /// Press this button down. If it was depressed and now set to not depressed, will
+    /// trigger the action.
+    /// </summary>
+    public void Depress(GUIBoundKeyEventArgs args, bool depress)
+    {
+        // action can still be toggled if it's allowed to stay selected
+        if (Action is not {Enabled: true})
+            return;
+
+        if (_depressed && !depress)
+        {
+            // fire the action
+            OnUnpressed(args);
+        }
+
+        _depressed = depress;
+        DrawModeChanged();
+    }
+
+    public void DrawModeChanged()
+    {
+        HighlightRect.Visible = _beingHovered;
+
+        // always show the normal empty button style if no action in this slot
+        if (Action == null)
+        {
+            SetOnlyStylePseudoClass(ContainerButton.StylePseudoClassNormal);
+            return;
+        }
+
+        // show a hover only if the action is usable or another action is being dragged on top of this
+        if (_beingHovered && (Controller.IsDragging || Action.Enabled))
+        {
+            SetOnlyStylePseudoClass(ContainerButton.StylePseudoClassHover);
+        }
+
+        // it's only depress-able if it's usable, so if we're depressed
+        // show the depressed style
+        if (_depressed)
+        {
+            HighlightRect.Visible = false;
+            SetOnlyStylePseudoClass(ContainerButton.StylePseudoClassPressed);
+            return;
+        }
+
+        // if it's toggled on, always show the toggled on style (currently same as depressed style)
+        if (Action.Toggled || Controller.SelectingTargetFor == this)
+        {
+            // when there's a toggle sprite, we're showing that sprite instead of highlighting this slot
+            SetOnlyStylePseudoClass(Action.IconOn != null
+                ? ContainerButton.StylePseudoClassNormal
+                : ContainerButton.StylePseudoClassPressed);
+            return;
+        }
+
+        if (!Action.Enabled)
+        {
+            SetOnlyStylePseudoClass(ContainerButton.StylePseudoClassDisabled);
+            return;
+        }
+
+        SetOnlyStylePseudoClass(ContainerButton.StylePseudoClassNormal);
+    }
+}

Content.Client/UserInterface/Systems/Actions/Controls/ActionButtonContainer.cs

@@ -0,0 +1,94 @@
+using Content.Shared.Actions.ActionTypes;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Actions.Controls;
+
+[Virtual]
+public class ActionButtonContainer : GridContainer
+{
+    [Dependency] private readonly IEntityManager _entityManager = default!;
+
+    public event Action<GUIBoundKeyEventArgs, ActionButton>? ActionPressed;
+    public event Action<GUIBoundKeyEventArgs, ActionButton>? ActionUnpressed;
+    public event Action<ActionButton>? ActionFocusExited;
+
+    public ActionButtonContainer()
+    {
+        IoCManager.InjectDependencies(this);
+        UserInterfaceManager.GetUIController<ActionUIController>().RegisterActionContainer(this);
+    }
+
+    public ActionButton this[int index]
+    {
+        get => (ActionButton) GetChild(index);
+        set
+        {
+            AddChild(value);
+            value.SetPositionInParent(index);
+            value.ActionPressed += ActionPressed;
+            value.ActionUnpressed += ActionUnpressed;
+            value.ActionFocusExited += ActionFocusExited;
+        }
+    }
+
+    public void SetActionData(params ActionType?[] actionTypes)
+    {
+        ClearActionData();
+
+        for (var i = 0; i < actionTypes.Length; i++)
+        {
+            var action = actionTypes[i];
+            if (action == null)
+                continue;
+
+            ((ActionButton) GetChild(i)).UpdateData(_entityManager, action);
+        }
+    }
+
+    public void ClearActionData()
+    {
+        foreach (var button in Children)
+        {
+            ((ActionButton) button).ClearData();
+        }
+    }
+
+    protected override void ChildAdded(Control newChild)
+    {
+        base.ChildAdded(newChild);
+
+        if (newChild is not ActionButton button)
+            return;
+
+        button.ActionPressed += ActionPressed;
+        button.ActionUnpressed += ActionUnpressed;
+        button.ActionFocusExited += ActionFocusExited;
+    }
+
+    public bool TryGetButtonIndex(ActionButton button, out int position)
+    {
+        if (button.Parent != this)
+        {
+            position = 0;
+            return false;
+        }
+
+        position = button.GetPositionInParent();
+        return true;
+    }
+
+    public IEnumerable<ActionButton> GetButtons()
+    {
+        foreach (var control in Children)
+        {
+            if (control is ActionButton button)
+                yield return button;
+        }
+    }
+
+    ~ActionButtonContainer()
+    {
+        UserInterfaceManager.GetUIController<ActionUIController>().RemoveActionContainer();
+    }
+}

Content.Client/UserInterface/Systems/Actions/Controls/ActionPageButtons.xaml

@@ -0,0 +1,25 @@
+<controls:ActionPageButtons
+    xmlns="https://spacestation14.io"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Actions.Controls">
+    <BoxContainer Orientation="Horizontal">
+        <Control HorizontalExpand="True" SizeFlagsStretchRatio="1"/>
+        <TextureButton TexturePath="/Textures/Interface/Nano/left_arrow.svg.192dpi.png"
+                       SizeFlagsStretchRatio="1"
+                       Scale="0.5 0.5"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center"
+                       Name="LeftArrow"
+                       Access="Public"/>
+        <Control HorizontalExpand="True" SizeFlagsStretchRatio="2"/>
+        <Label Text="1" SizeFlagsStretchRatio="1" Name="Label" Access="Public" />
+        <Control HorizontalExpand="True" SizeFlagsStretchRatio="2"/>
+        <TextureButton TexturePath="/Textures/Interface/Nano/right_arrow.svg.192dpi.png"
+                       SizeFlagsStretchRatio="1"
+                       Scale="0.5 0.5"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center"
+                       Name="RightArrow"
+                       Access="Public"/>
+        <Control HorizontalExpand="True" SizeFlagsStretchRatio="1"/>
+    </BoxContainer>
+</controls:ActionPageButtons>

Content.Client/UserInterface/Systems/Actions/Controls/ActionPageButtons.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Actions.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ActionPageButtons : Control
+{
+    public ActionPageButtons()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Actions/Controls/ActionTooltip.xaml

@@ -0,0 +1,9 @@
+<controls:ActionTooltip
+    xmlns="https://spacestation14.io"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Actions.Controls"
+    StyleClasses="StyleClassTooltipPanel">
+    <BoxContainer Orientation="Vertical" RectClipContent="True">
+        <RichTextLabel MaxWidth="350" StyleClasses="StyleClassTooltipActionTitle"/>
+        <RichTextLabel MaxWidth="350" StyleClasses="StyleClassTooltipActionDescription"/>
+    </BoxContainer>
+</controls:ActionTooltip>

Content.Client/UserInterface/Systems/Actions/Controls/ActionTooltip.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Actions.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ActionTooltip : PanelContainer
+{
+    public ActionTooltip()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Actions/Widgets/ActionsBar.xaml

@@ -0,0 +1,19 @@
+<widgets:ActionsBar
+    xmlns="https://spacestation14.io"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:in="clr-namespace:Content.Shared.Input;assembly=Content.Shared"
+    xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Actions.Widgets"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Actions.Controls"
+    VerticalExpand="False"
+    Orientation="Horizontal"
+    HorizontalExpand="False"
+>
+    <BoxContainer Orientation="Vertical">
+        <controls:ActionButtonContainer
+            HorizontalAlignment="Center"
+            VerticalAlignment="Center"
+            Name="ActionsContainer"
+            Access="Public"/>
+        <controls:ActionPageButtons Name="PageButtons" Access="Public"/>
+    </BoxContainer>
+</widgets:ActionsBar>

Content.Client/UserInterface/Systems/Actions/Widgets/ActionsBar.xaml.cs

@@ -0,0 +1,34 @@
+using Content.Client.UserInterface.Systems.Actions.Controls;
+using Content.Shared.Input;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Input;
+
+namespace Content.Client.UserInterface.Systems.Actions.Widgets;
+
+[GenerateTypedNameReferences]
+public sealed partial class ActionsBar : UIWidget
+{
+    public ActionsBar()
+    {
+        RobustXamlLoader.Load(this);
+
+        var keys = ContentKeyFunctions.GetHotbarBoundKeys();
+        for (var index = 1; index < keys.Length; index++)
+        {
+            ActionsContainer.Children.Add(MakeButton(index));
+        }
+        ActionsContainer.Children.Add(MakeButton(0));
+
+        ActionButton MakeButton(int index)
+        {
+            var boundKey = keys[index];
+            var button = new ActionButton();
+            button.KeyBind = boundKey;
+            button.Label.Text = index.ToString();
+            return button;
+        }
+    }
+}
+

Content.Client/UserInterface/Systems/Actions/Windows/ActionsWindow.xaml

@@ -0,0 +1,23 @@
+<windows:ActionsWindow
+    xmlns="https://spacestation14.io"
+    xmlns:windows="clr-namespace:Content.Client.UserInterface.Systems.Actions.Windows"
+    Name="ActionsList"
+    HorizontalExpand="True"
+    Title="Actions"
+    VerticalExpand="True"
+    Resizable="True"
+    MinHeight="300"
+    MinWidth="300"
+>
+    <BoxContainer Orientation="Vertical">
+        <BoxContainer Name="SearchContainer" Orientation="Horizontal">
+            <LineEdit Name="SearchBar" Access="Public" StyleClasses="actionSearchBox" HorizontalExpand="True"
+                      PlaceHolder="{Loc ui-actionmenu-search-bar-placeholder-text}"/>
+        </BoxContainer>
+        <Button Name="ClearButton" Access="Public" Text="{Loc ui-actionmenu-clear-button}"/>
+        <Label Name="FilterLabel" Access="Public"/>
+        <ScrollContainer VerticalExpand="True" HorizontalExpand="True">
+            <GridContainer Name="ResultsGrid" Access="Public" MaxGridWidth="300"/>
+        </ScrollContainer>
+    </BoxContainer>
+</windows:ActionsWindow>

Content.Client/UserInterface/Systems/Actions/Windows/ActionsWindow.xaml.cs

@@ -0,0 +1,36 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Actions.Windows;
+
+[GenerateTypedNameReferences]
+public sealed partial class ActionsWindow : DefaultWindow
+{
+    public MultiselectOptionButton<Filters> FilterButton { get; private set; }
+
+    public ActionsWindow()
+    {
+        RobustXamlLoader.Load(this);
+
+        SearchContainer.AddChild(FilterButton = new MultiselectOptionButton<Filters>
+        {
+            Label = Loc.GetString("ui-actionmenu-filter-button")
+        });
+
+        foreach (var filter in Enum.GetValues<Filters>())
+        {
+            FilterButton.AddItem(filter.ToString(), filter);
+        }
+    }
+
+    public enum Filters
+    {
+        Enabled,
+        Item,
+        Innate,
+        Instant,
+        Targeted
+    }
+}

Content.Client/UserInterface/Systems/Admin/AdminUIController.cs

@@ -0,0 +1,114 @@
+using Content.Client.Administration.Managers;
+using Content.Client.Administration.UI;
+using Content.Client.Administration.UI.Tabs.PlayerTab;
+using Content.Client.Gameplay;
+using Content.Client.UserInterface.Controls;
+using Content.Client.Verbs;
+using Content.Shared.Input;
+using JetBrains.Annotations;
+using Robust.Client.Console;
+using Robust.Client.Input;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Utility;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.UserInterface.Systems.Admin;
+
+[UsedImplicitly]
+public sealed class AdminUIController : UIController, IOnStateEntered<GameplayState>, IOnStateExited<GameplayState>
+{
+    [Dependency] private readonly IClientAdminManager _admin = default!;
+    [Dependency] private readonly IClientConGroupController _conGroups = default!;
+    [Dependency] private readonly IClientConsoleHost _conHost = default!;
+    [Dependency] private readonly IInputManager _input = default!;
+
+    [UISystemDependency] private readonly VerbSystem _verbs = default!;
+
+    private AdminMenuWindow? _window;
+    private MenuButton? _adminButton;
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_window == null);
+        _window = UIManager.CreateWindow<AdminMenuWindow>();
+        _adminButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().AdminButton;
+        LayoutContainer.SetAnchorPreset(_window, LayoutContainer.LayoutPreset.Center);
+        _window.PlayerTabControl.OnEntryPressed += PlayerTabEntryPressed;
+        _window.OnOpen += () => _adminButton.Pressed = true;
+        _window.OnClose += () => _adminButton.Pressed = false;
+
+        _admin.AdminStatusUpdated += AdminStatusUpdated;
+
+        _adminButton.OnPressed += AdminButtonPressed;
+
+        _input.SetInputCommand(ContentKeyFunctions.OpenAdminMenu,
+            InputCmdHandler.FromDelegate(_ => Toggle()));
+
+        AdminStatusUpdated();
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_window != null)
+        {
+            _window.Dispose();
+            _window = null;
+        }
+
+        _admin.AdminStatusUpdated -= AdminStatusUpdated;
+
+        if (_adminButton != null)
+        {
+            _adminButton.Pressed = false;
+            _adminButton.OnPressed -= AdminButtonPressed;
+            _adminButton = null;
+        }
+
+        CommandBinds.Unregister<AdminUIController>();
+    }
+
+    private void AdminStatusUpdated()
+    {
+        _adminButton!.Visible = _conGroups.CanAdminMenu();
+    }
+
+    private void AdminButtonPressed(ButtonEventArgs args)
+    {
+        Toggle();
+    }
+
+    private void Toggle()
+    {
+        if (_window is {IsOpen: true})
+        {
+            _window.Close();
+        }
+        else if (_conGroups.CanAdminMenu())
+        {
+            _window?.Open();
+        }
+    }
+
+    private void PlayerTabEntryPressed(ButtonEventArgs args)
+    {
+        if (args.Button is not PlayerTabEntry button
+            || button.PlayerUid == null)
+            return;
+
+        var uid = button.PlayerUid.Value;
+        var function = args.Event.Function;
+
+        if (function == EngineKeyFunctions.UIClick)
+            _conHost.ExecuteCommand($"vv {uid}");
+        else if (function == EngineKeyFunctions.UseSecondary)
+            _verbs.VerbMenu.OpenVerbMenu(uid, true);
+        else
+            return;
+
+        args.Event.Handle();
+    }
+}

Content.Client/UserInterface/Systems/Alerts/AlertsUIController.cs

@@ -0,0 +1,58 @@
+using Content.Client.Alerts;
+using Content.Client.Gameplay;
+using Content.Client.UserInterface.Systems.Alerts.Widgets;
+using Content.Shared.Alert;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+
+namespace Content.Client.UserInterface.Systems.Alerts;
+
+public sealed class AlertsUIController : UIController, IOnStateEntered<GameplayState>, IOnSystemChanged<ClientAlertsSystem>
+{
+    [UISystemDependency] private readonly ClientAlertsSystem? _alertsSystem = default;
+
+    private AlertsUI? UI => UIManager.GetActiveUIWidgetOrNull<AlertsUI>();
+
+    private void OnAlertPressed(object? sender, AlertType e)
+    {
+        _alertsSystem?.AlertClicked(e);
+    }
+
+    private void SystemOnClearAlerts(object? sender, EventArgs e)
+    {
+        UI?.ClearAllControls();
+    }
+
+    private void SystemOnSyncAlerts(object? sender, IReadOnlyDictionary<AlertKey, AlertState> e)
+    {
+        if (sender is ClientAlertsSystem system)
+            UI?.SyncControls(system, system.AlertOrder, e);
+    }
+
+    public void OnSystemLoaded(ClientAlertsSystem system)
+    {
+        system.SyncAlerts += SystemOnSyncAlerts;
+        system.ClearAlerts += SystemOnClearAlerts;
+    }
+
+    public void OnSystemUnloaded(ClientAlertsSystem system)
+    {
+        system.SyncAlerts -= SystemOnSyncAlerts;
+        system.ClearAlerts -= SystemOnClearAlerts;
+    }
+
+    public void OnStateEntered(GameplayState state)
+    {
+        if (UI != null)
+        {
+            UI.AlertPressed += OnAlertPressed;
+        }
+
+        // initially populate the frame if system is available
+        var alerts = _alertsSystem?.ActiveAlerts;
+        if (alerts != null)
+        {
+            SystemOnSyncAlerts(_alertsSystem, alerts);
+        }
+    }
+}

Content.Client/UserInterface/Systems/Alerts/Controls/AlertControl.cs

@@ -0,0 +1,96 @@
+using Content.Client.Actions.UI;
+using Content.Client.Cooldown;
+using Content.Shared.Alert;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Timing;
+
+namespace Content.Client.UserInterface.Systems.Alerts.Controls
+{
+    public sealed class AlertControl : BaseButton
+    {
+        // shorter than default tooltip delay so user can more easily
+        // see what alerts they have
+        private const float CustomTooltipDelay = 0.5f;
+
+        public AlertPrototype Alert { get; }
+
+        /// <summary>
+        /// Current cooldown displayed in this slot. Set to null to show no cooldown.
+        /// </summary>
+        public (TimeSpan Start, TimeSpan End)? Cooldown
+        {
+            get => _cooldown;
+            set
+            {
+                _cooldown = value;
+                if (SuppliedTooltip is ActionAlertTooltip actionAlertTooltip)
+                {
+                    actionAlertTooltip.Cooldown = value;
+                }
+            }
+        }
+
+        private (TimeSpan Start, TimeSpan End)? _cooldown;
+
+        private short? _severity;
+        private readonly IGameTiming _gameTiming;
+        private readonly AnimatedTextureRect _icon;
+        private readonly CooldownGraphic _cooldownGraphic;
+
+        /// <summary>
+        /// Creates an alert control reflecting the indicated alert + state
+        /// </summary>
+        /// <param name="alert">alert to display</param>
+        /// <param name="severity">severity of alert, null if alert doesn't have severity levels</param>
+        public AlertControl(AlertPrototype alert, short? severity)
+        {
+            _gameTiming = IoCManager.Resolve<IGameTiming>();
+            TooltipDelay = CustomTooltipDelay;
+            TooltipSupplier = SupplyTooltip;
+            Alert = alert;
+            _severity = severity;
+            var specifier = alert.GetIcon(_severity);
+            _icon = new AnimatedTextureRect
+            {
+                DisplayRect = {TextureScale = (2, 2)}
+            };
+
+            _icon.SetFromSpriteSpecifier(specifier);
+
+            Children.Add(_icon);
+            _cooldownGraphic = new CooldownGraphic();
+            Children.Add(_cooldownGraphic);
+        }
+
+        private Control SupplyTooltip(Control? sender)
+        {
+            return new ActionAlertTooltip(Alert.Name, Alert.Description) {Cooldown = Cooldown};
+        }
+
+        /// <summary>
+        /// Change the alert severity, changing the displayed icon
+        /// </summary>
+        public void SetSeverity(short? severity)
+        {
+            if (_severity != severity)
+            {
+                _severity = severity;
+                _icon.SetFromSpriteSpecifier(Alert.GetIcon(_severity));
+            }
+        }
+
+        protected override void FrameUpdate(FrameEventArgs args)
+        {
+            base.FrameUpdate(args);
+            if (!Cooldown.HasValue)
+            {
+                _cooldownGraphic.Visible = false;
+                _cooldownGraphic.Progress = 0;
+                return;
+            }
+
+            _cooldownGraphic.FromTime(Cooldown.Value.Start, Cooldown.Value.End);
+        }
+    }
+}

Content.Client/UserInterface/Systems/Alerts/Widgets/AlertsUI.xaml

@@ -0,0 +1,7 @@
+<widgets:AlertsUI xmlns="https://spacestation14.io"
+                  xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Alerts.Widgets"
+                  MinSize="64 64">
+    <PanelContainer HorizontalAlignment="Right" VerticalAlignment="Top">
+        <BoxContainer Name="AlertContainer" Access="Public" Orientation="Vertical" />
+    </PanelContainer>
+</widgets:AlertsUI>

Content.Client/UserInterface/Systems/Alerts/Widgets/AlertsUI.xaml.cs

@@ -0,0 +1,154 @@
+using Content.Client.UserInterface.Systems.Alerts.Controls;
+using Content.Shared.Alert;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Input;
+
+namespace Content.Client.UserInterface.Systems.Alerts.Widgets;
+
+/// <summary>
+///     The status effects display on the right side of the screen.
+/// </summary>
+[GenerateTypedNameReferences]
+public sealed partial class AlertsUI : UIWidget
+{
+    // also known as Control.Children?
+    private readonly Dictionary<AlertKey, AlertControl> _alertControls = new();
+
+    public AlertsUI()
+    {
+        RobustXamlLoader.Load(this);
+    }
+
+    public void SyncControls(AlertsSystem alertsSystem, AlertOrderPrototype? alertOrderPrototype,
+        IReadOnlyDictionary<AlertKey, AlertState> alertStates)
+    {
+        // remove any controls with keys no longer present
+        if (SyncRemoveControls(alertStates))
+            return;
+
+        // now we know that alertControls contains alerts that should still exist but
+        // may need to updated,
+        // also there may be some new alerts we need to show.
+        // further, we need to ensure they are ordered w.r.t their configured order
+        SyncUpdateControls(alertsSystem, alertOrderPrototype, alertStates);
+    }
+
+    public void ClearAllControls()
+    {
+        foreach (var alertControl in _alertControls.Values)
+        {
+            alertControl.OnPressed -= AlertControlPressed;
+            alertControl.Dispose();
+        }
+
+        _alertControls.Clear();
+    }
+
+    public event EventHandler<AlertType>? AlertPressed;
+
+    private bool SyncRemoveControls(IReadOnlyDictionary<AlertKey, AlertState> alertStates)
+    {
+        var toRemove = new List<AlertKey>();
+        foreach (var existingKey in _alertControls.Keys)
+        {
+            if (!alertStates.ContainsKey(existingKey))
+                toRemove.Add(existingKey);
+        }
+
+        foreach (var alertKeyToRemove in toRemove)
+        {
+            _alertControls.Remove(alertKeyToRemove, out var control);
+            if (control == null)
+                return true;
+            AlertContainer.Children.Remove(control);
+        }
+
+        return false;
+    }
+
+    private void SyncUpdateControls(AlertsSystem alertsSystem, AlertOrderPrototype? alertOrderPrototype,
+        IReadOnlyDictionary<AlertKey, AlertState> alertStates)
+    {
+        foreach (var (alertKey, alertState) in alertStates)
+        {
+            if (!alertKey.AlertType.HasValue)
+            {
+                Logger.WarningS("alert", "found alertkey without alerttype," +
+                                         " alert keys should never be stored without an alerttype set: {0}", alertKey);
+                continue;
+            }
+
+            var alertType = alertKey.AlertType.Value;
+            if (!alertsSystem.TryGet(alertType, out var newAlert))
+            {
+                Logger.ErrorS("alert", "Unrecognized alertType {0}", alertType);
+                continue;
+            }
+
+            if (_alertControls.TryGetValue(newAlert.AlertKey, out var existingAlertControl) &&
+                existingAlertControl.Alert.AlertType == newAlert.AlertType)
+            {
+                // key is the same, simply update the existing control severity / cooldown
+                existingAlertControl.SetSeverity(alertState.Severity);
+                existingAlertControl.Cooldown = alertState.Cooldown;
+            }
+            else
+            {
+                if (existingAlertControl != null) AlertContainer.Children.Remove(existingAlertControl);
+
+                // this is a new alert + alert key or just a different alert with the same
+                // key, create the control and add it in the appropriate order
+                var newAlertControl = CreateAlertControl(newAlert, alertState);
+
+                //TODO: Can the presenter sort the states before giving it to us?
+                if (alertOrderPrototype != null)
+                {
+                    var added = false;
+                    foreach (var alertControl in AlertContainer.Children)
+                    {
+                        if (alertOrderPrototype.Compare(newAlert, ((AlertControl) alertControl).Alert) >= 0)
+                            continue;
+
+                        var idx = alertControl.GetPositionInParent();
+                        AlertContainer.Children.Add(newAlertControl);
+                        newAlertControl.SetPositionInParent(idx);
+                        added = true;
+                        break;
+                    }
+
+                    if (!added)
+                        AlertContainer.Children.Add(newAlertControl);
+                }
+                else
+                {
+                    AlertContainer.Children.Add(newAlertControl);
+                }
+
+                _alertControls[newAlert.AlertKey] = newAlertControl;
+            }
+        }
+    }
+
+    private AlertControl CreateAlertControl(AlertPrototype alert, AlertState alertState)
+    {
+        var alertControl = new AlertControl(alert, alertState.Severity)
+        {
+            Cooldown = alertState.Cooldown
+        };
+        alertControl.OnPressed += AlertControlPressed;
+        return alertControl;
+    }
+
+    private void AlertControlPressed(BaseButton.ButtonEventArgs args)
+    {
+        if (args.Button is not AlertControl control)
+            return;
+
+        if (args.Event.Function != EngineKeyFunctions.UIClick)
+            return;
+
+        AlertPressed?.Invoke(this, control.Alert.AlertType);
+    }
+}

Content.Client/UserInterface/Systems/Bwoink/AHelpUIController.cs

@@ -0,0 +1,323 @@
+using System.Diagnostics.CodeAnalysis;
+using Content.Client.Administration.Managers;
+using Content.Client.Administration.Systems;
+using Content.Client.Administration.UI;
+using Content.Client.Administration.UI.CustomControls;
+using Content.Client.Gameplay;
+using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Info;
+using Content.Shared.Administration;
+using Content.Shared.Input;
+using JetBrains.Annotations;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Audio;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Network;
+using Robust.Shared.Player;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Systems.Bwoink;
+
+[UsedImplicitly]
+public sealed class AHelpUIController: UIController, IOnStateChanged<GameplayState>, IOnSystemChanged<BwoinkSystem>
+{
+    [Dependency] private readonly IClientAdminManager _adminManager = default!;
+    [Dependency] private readonly IPlayerManager _playerManager = default!;
+    [Dependency] private readonly IClyde _clyde = default!;
+    private BwoinkSystem? _bwoinkSystem;
+    private MenuButton? _ahelpButton;
+    private IAHelpUIHandler? _uiHelper;
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_uiHelper == null);
+        _ahelpButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().AHelpButton;
+        _ahelpButton.OnPressed += AHelpButtonPressed;
+        _adminManager.AdminStatusUpdated += OnAdminStatusUpdated;
+
+        CommandBinds.Builder
+            .Bind(ContentKeyFunctions.OpenAHelp,
+                InputCmdHandler.FromDelegate(_ => ToggleWindow()))
+            .Register<AHelpUIController>();
+    }
+
+    private void OnAdminStatusUpdated()
+    {
+        if (_uiHelper is not { IsOpen: true })
+            return;
+        EnsureUIHelper();
+    }
+
+    private void AHelpButtonPressed(BaseButton.ButtonEventArgs obj)
+    {
+        EnsureUIHelper();
+        _uiHelper!.ToggleWindow();
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        _uiHelper?.Dispose();
+        _uiHelper = null;
+        CommandBinds.Unregister<AHelpUIController>();
+    }
+    public void OnSystemLoaded(BwoinkSystem system)
+    {
+        _bwoinkSystem = system;
+        _bwoinkSystem.OnBwoinkTextMessageRecieved += RecievedBwoink;
+    }
+
+    public void OnSystemUnloaded(BwoinkSystem system)
+    {
+        _bwoinkSystem = null;
+    }
+
+    private void SetAHelpPressed(bool pressed)
+    {
+        if (_ahelpButton == null || _ahelpButton.Pressed == pressed)
+            return;
+        _ahelpButton.StyleClasses.Remove(MenuButton.StyleClassRedTopButton);
+        _ahelpButton.Pressed = pressed;
+    }
+
+    private void RecievedBwoink(object? sender, SharedBwoinkSystem.BwoinkTextMessage message)
+    {
+        Logger.InfoS("c.s.go.es.bwoink", $"@{message.UserId}: {message.Text}");
+        var localPlayer = _playerManager.LocalPlayer;
+        if (localPlayer == null)
+        {
+            return;
+        }
+        if (localPlayer.UserId != message.TrueSender)
+        {
+            SoundSystem.Play("/Audio/Effects/adminhelp.ogg", Filter.Local());
+            _clyde.RequestWindowAttention();
+        }
+
+        EnsureUIHelper();
+        if (!_uiHelper!.IsOpen)
+        {
+            _ahelpButton?.StyleClasses.Add(MenuButton.StyleClassRedTopButton);
+        }
+        _uiHelper!.Receive(message);
+    }
+
+    public void EnsureUIHelper()
+    {
+        var isAdmin = _adminManager.HasFlag(AdminFlags.Adminhelp);
+
+        if (_uiHelper != null && _uiHelper.IsAdmin == isAdmin)
+            return;
+
+        _uiHelper?.Dispose();
+        var ownerUserId = _playerManager!.LocalPlayer!.UserId;
+        _uiHelper = isAdmin ? new AdminAHelpUIHandler(ownerUserId) : new UserAHelpUIHandler(ownerUserId);
+
+        _uiHelper.SendMessageAction = (userId, textMessage) => _bwoinkSystem?.Send(userId, textMessage);
+        _uiHelper.OnClose += () => { SetAHelpPressed(false); };
+        _uiHelper.OnOpen +=  () => { SetAHelpPressed(true); };
+        SetAHelpPressed(_uiHelper.IsOpen);
+    }
+
+    public void Close()
+    {
+        _uiHelper?.Close();
+    }
+
+    public void Open()
+    {
+        var localPlayer = _playerManager.LocalPlayer;
+        if (localPlayer == null)
+        {
+            return;
+        }
+        EnsureUIHelper();
+        if (_uiHelper!.IsOpen)
+            return;
+        _uiHelper!.Open(localPlayer.UserId);
+    }
+    public void Open(NetUserId userId)
+    {
+        EnsureUIHelper();
+        if (!_uiHelper!.IsAdmin)
+            return;
+        _uiHelper?.Open(userId);
+    }
+    public void ToggleWindow()
+    {
+        EnsureUIHelper();
+        _uiHelper?.ToggleWindow();
+    }
+}
+
+public interface IAHelpUIHandler: IDisposable
+{
+    public bool IsAdmin { get; }
+    public bool IsOpen { get; }
+    public void Receive(SharedBwoinkSystem.BwoinkTextMessage message);
+    public void Close();
+    public void Open(NetUserId netUserId);
+    public void ToggleWindow();
+    public event Action OnClose;
+    public event Action OnOpen;
+    public Action<NetUserId, string>? SendMessageAction { get; set; }
+}
+public sealed class AdminAHelpUIHandler : IAHelpUIHandler
+{
+    private readonly NetUserId _ownerId;
+    public AdminAHelpUIHandler(NetUserId owner)
+    {
+        _ownerId = owner;
+    }
+    private readonly Dictionary<NetUserId, BwoinkPanel> _activePanelMap = new();
+    public bool IsAdmin => true;
+    public bool IsOpen => _window is { Disposed: false, IsOpen: true };
+    private BwoinkWindow? _window;
+
+    public void Receive(SharedBwoinkSystem.BwoinkTextMessage message)
+    {
+        var window = EnsurePanel(message.UserId);
+        window.ReceiveLine(message);
+        _window?.OnBwoink(message.UserId);
+    }
+
+    public void Close()
+    {
+        _window?.Close();
+    }
+
+    public void ToggleWindow()
+    {
+        EnsurePanel(_ownerId);
+        if (_window!.IsOpen)
+        {
+            _window.Close();
+        }
+        else
+        {
+            _window.OpenCentered();
+        }
+    }
+
+    public event Action? OnClose;
+    public event Action? OnOpen;
+    public Action<NetUserId, string>? SendMessageAction { get; set; }
+
+    public void Open(NetUserId channelId)
+    {
+        SelectChannel(channelId);
+        _window?.OpenCentered();
+    }
+
+    private void EnsureWindow()
+    {
+        if (_window is { Disposed: false })
+            return;
+        _window = new BwoinkWindow(this);
+        _window.OnClose += () => { OnClose?.Invoke(); };
+        _window.OnOpen += () => { OnOpen?.Invoke(); };
+    }
+    public BwoinkPanel EnsurePanel(NetUserId channelId)
+    {
+        EnsureWindow();
+
+        if (_activePanelMap.TryGetValue(channelId, out var existingPanel))
+            return existingPanel;
+
+        _activePanelMap[channelId] = existingPanel = new BwoinkPanel(text => SendMessageAction?.Invoke(channelId, text));
+        existingPanel.Visible = false;
+        if (!_window!.BwoinkArea.Children.Contains(existingPanel))
+            _window.BwoinkArea.AddChild(existingPanel);
+
+        return existingPanel;
+    }
+    public bool TryGetChannel(NetUserId ch, [NotNullWhen(true)] out BwoinkPanel? bp) => _activePanelMap.TryGetValue(ch, out bp);
+
+    private void SelectChannel(NetUserId uid)
+    {
+        EnsurePanel(uid);
+        _window!.SelectChannel(uid);
+    }
+
+    public void Dispose()
+    {
+        _window?.Dispose();
+        _window = null;
+        _activePanelMap.Clear();
+    }
+}
+public sealed class UserAHelpUIHandler : IAHelpUIHandler
+{
+    private readonly NetUserId _ownerId;
+    public UserAHelpUIHandler(NetUserId owner)
+    {
+        _ownerId = owner;
+    }
+    public bool IsAdmin => false;
+    public bool IsOpen => _window is { Disposed: false, IsOpen: true };
+    private DefaultWindow? _window;
+    private BwoinkPanel? _chatPanel;
+
+    public void Receive(SharedBwoinkSystem.BwoinkTextMessage message)
+    {
+        DebugTools.Assert(message.UserId == _ownerId);
+        EnsureInit();
+        _chatPanel!.ReceiveLine(message);
+        _window!.OpenCentered();
+    }
+
+    public void Close()
+    {
+        _window?.Close();
+    }
+
+    public void ToggleWindow()
+    {
+        EnsureInit();
+        if (_window!.IsOpen)
+        {
+            _window.Close();
+        }
+        else
+        {
+            _window.OpenCentered();
+        }
+    }
+
+    public event Action? OnClose;
+    public event Action? OnOpen;
+    public Action<NetUserId, string>? SendMessageAction { get; set; }
+
+    public void Open(NetUserId channelId)
+    {
+        EnsureInit();
+        _window!.OpenCentered();
+    }
+
+    private void EnsureInit()
+    {
+        if (_window is { Disposed: false })
+            return;
+        _chatPanel = new BwoinkPanel(text => SendMessageAction?.Invoke(_ownerId, text));
+        _window = new DefaultWindow()
+        {
+            TitleClass="windowTitleAlert",
+            HeaderClass="windowHeaderAlert",
+            Title=Loc.GetString("bwoink-user-title"),
+            SetSize=(400, 200),
+        };
+        _window.OnClose += () => { OnClose?.Invoke(); };
+        _window.OnOpen += () => { OnOpen?.Invoke(); };
+        _window.Contents.AddChild(_chatPanel);
+    }
+
+    public void Dispose()
+    {
+        _window?.Dispose();
+        _window = null;
+        _chatPanel = null;
+    }
+}

Content.Client/UserInterface/Systems/Character/CharacterUIController.cs

@@ -0,0 +1,154 @@
+using Content.Client.CharacterInfo;
+using Content.Client.Gameplay;
+using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Character.Controls;
+using Content.Client.UserInterface.Systems.Character.Windows;
+using Content.Client.UserInterface.Systems.Objectives.Controls;
+using Content.Shared.Input;
+using JetBrains.Annotations;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.Utility;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Utility;
+using static Content.Client.CharacterInfo.CharacterInfoSystem;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.UserInterface.Systems.Character;
+
+[UsedImplicitly]
+public sealed class CharacterUIController : UIController, IOnStateEntered<GameplayState>, IOnStateExited<GameplayState>, IOnSystemChanged<CharacterInfoSystem>
+{
+    [UISystemDependency] private readonly CharacterInfoSystem _characterInfo = default!;
+
+    private CharacterWindow? _window;
+    private MenuButton? _characterButton;
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_window == null);
+        _characterButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().CharacterButton;
+        _characterButton.OnPressed += CharacterButtonPressed;
+
+        _window = UIManager.CreateWindow<CharacterWindow>();
+        LayoutContainer.SetAnchorPreset(_window, LayoutContainer.LayoutPreset.CenterTop);
+
+        _window.OnClose += () => { _characterButton.Pressed = false; };
+        _window.OnOpen += () => { _characterButton.Pressed = true; };
+
+        CommandBinds.Builder
+            .Bind(ContentKeyFunctions.OpenCharacterMenu,
+                 InputCmdHandler.FromDelegate(_ => ToggleWindow()))
+             .Register<CharacterUIController>();
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_window != null)
+        {
+            _window.Dispose();
+            _window = null;
+        }
+
+        if (_characterButton != null)
+        {
+            _characterButton.OnPressed -= CharacterButtonPressed;
+            _characterButton.Pressed = false;
+            _characterButton = null;
+        }
+
+        CommandBinds.Unregister<CharacterUIController>();
+    }
+
+    public void OnSystemLoaded(CharacterInfoSystem system)
+    {
+        system.OnCharacterUpdate += CharacterUpdated;
+        system.OnCharacterDetached += CharacterDetached;
+    }
+
+    public void OnSystemUnloaded(CharacterInfoSystem system)
+    {
+        system.OnCharacterUpdate -= CharacterUpdated;
+        system.OnCharacterDetached -= CharacterDetached;
+    }
+
+    private void CharacterUpdated(CharacterData data)
+    {
+        if (_window == null)
+        {
+            return;
+        }
+
+        var (job, objectives, briefing, sprite, entityName) = data;
+
+        _window.SubText.Text = job;
+        _window.Objectives.RemoveAllChildren();
+
+        foreach (var (groupId, conditions) in objectives)
+        {
+            var objectiveControl = new CharacterObjectiveControl
+            {
+                Orientation = BoxContainer.LayoutOrientation.Vertical,
+                Modulate = Color.Gray
+            };
+
+            objectiveControl.AddChild(new Label
+            {
+                Text = groupId,
+                Modulate = Color.LightSkyBlue
+            });
+
+            foreach (var condition in conditions)
+            {
+                var conditionControl = new ObjectiveConditionsControl();
+                conditionControl.ProgressTexture.Texture = condition.SpriteSpecifier.Frame0();
+                conditionControl.ProgressTexture.Progress = condition.Progress;
+
+                conditionControl.Title.Text = condition.Title;
+                conditionControl.Description.Text = condition.Description;
+
+                objectiveControl.AddChild(conditionControl);
+            }
+
+            var briefingControl = new ObjectiveBriefingControl();
+            briefingControl.Label.Text = briefing;
+
+            objectiveControl.AddChild(briefingControl);
+            _window.Objectives.AddChild(objectiveControl);
+        }
+
+        _window.SpriteView.Sprite = sprite;
+        _window.NameLabel.Text = entityName;
+    }
+
+    private void CharacterDetached()
+    {
+        CloseWindow();
+    }
+
+    private void CharacterButtonPressed(ButtonEventArgs args)
+    {
+        ToggleWindow();
+    }
+
+    private void CloseWindow()
+    {
+        _window!.Close();
+    }
+
+    private void ToggleWindow()
+    {
+        if (_window == null)
+            return;
+        if (_window.IsOpen)
+        {
+            CloseWindow();
+        }
+        else
+        {
+            _characterInfo.RequestCharacterInfo();
+            _window.Open();
+        }
+    }
+}

Content.Client/UserInterface/Systems/Character/Controls/CharacterObjectiveControl.xaml

@@ -0,0 +1,8 @@
+<controls:CharacterObjectiveControl
+    xmlns="https://spacestation14.io"
+    xmlns:cc="clr-namespace:Content.Client.UserInterface.Controls"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Character.Controls"
+    Orientation="Vertical"
+    Modulate="#808080">
+    <Label Name="Group" Modulate="#87CEFA" Access="Public"/>
+</controls:CharacterObjectiveControl>

Content.Client/UserInterface/Systems/Character/Controls/CharacterObjectiveControl.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Character.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class CharacterObjectiveControl : BoxContainer
+{
+    public CharacterObjectiveControl()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Character/Windows/CharacterWindow.xaml

@@ -0,0 +1,22 @@
+<windows:CharacterWindow
+    xmlns="https://spacestation14.io"
+    xmlns:cc="clr-namespace:Content.Client.UserInterface.Controls"
+    xmlns:windows="clr-namespace:Content.Client.UserInterface.Systems.Character.Windows"
+    Title="{Loc 'character-info-title'}"
+    MinWidth="400"
+    MinHeight="545">
+    <ScrollContainer>
+        <BoxContainer Orientation="Vertical">
+            <BoxContainer Orientation="Horizontal">
+                <SpriteView OverrideDirection="South" Scale="2 2" Name="SpriteView" Access="Public"/>
+                <BoxContainer Orientation="Vertical" VerticalAlignment="Top">
+                    <Label Name="NameLabel" Access="Public"/>
+                    <Label Name="SubText" VerticalAlignment="Top" StyleClasses="LabelSubText" Access="Public"/>
+                </BoxContainer>
+            </BoxContainer>
+            <Label Text="{Loc 'character-info-objectives-label'}" HorizontalAlignment="Center"/>
+            <BoxContainer Orientation="Vertical" Name="Objectives" Access="Public"/>
+            <cc:Placeholder PlaceholderText="{Loc 'character-info-roles-antagonist-text'}"/>
+        </BoxContainer>
+    </ScrollContainer>
+</windows:CharacterWindow>

Content.Client/UserInterface/Systems/Character/Windows/CharacterWindow.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Character.Windows;
+
+[GenerateTypedNameReferences]
+public sealed partial class CharacterWindow : DefaultWindow
+{
+    public CharacterWindow()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Chat/ChatUIController.cs

@@ -0,0 +1,715 @@
+using System.Linq;
+using Content.Client.Administration.Managers;
+using Content.Client.Chat;
+using Content.Client.Chat.Managers;
+using Content.Client.Chat.TypingIndicator;
+using Content.Client.Chat.UI;
+using Content.Client.Examine;
+using Content.Client.Gameplay;
+using Content.Client.Ghost;
+using Content.Client.UserInterface.Systems.Chat.Widgets;
+using Content.Shared.Administration;
+using Content.Shared.CCVar;
+using Content.Shared.Chat;
+using Content.Shared.Examine;
+using Content.Shared.Input;
+using Robust.Client.Graphics;
+using Robust.Client.Input;
+using Robust.Client.Player;
+using Robust.Client.State;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Configuration;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Map;
+using Robust.Shared.Network;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Systems.Chat;
+
+public sealed class ChatUIController : UIController
+{
+    [Dependency] private readonly IClientAdminManager _admin = default!;
+    [Dependency] private readonly IChatManager _manager = default!;
+    [Dependency] private readonly IConfigurationManager _config = default!;
+    [Dependency] private readonly IEntityManager _entities = default!;
+    [Dependency] private readonly IEyeManager _eye = default!;
+    [Dependency] private readonly IInputManager _input = default!;
+    [Dependency] private readonly IClientNetManager _net = default!;
+    [Dependency] private readonly IPlayerManager _player = default!;
+    [Dependency] private readonly IStateManager _state = default!;
+
+    [UISystemDependency] private readonly ExamineSystem? _examine = default;
+    [UISystemDependency] private readonly GhostSystem? _ghost = default;
+    [UISystemDependency] private readonly TypingIndicatorSystem? _typingIndicator = default;
+
+    private ISawmill _sawmill = default!;
+
+    public const char AliasLocal = '.';
+    public const char AliasConsole = '/';
+    public const char AliasDead = '\\';
+    public const char AliasOOC = '[';
+    public const char AliasEmotes = '@';
+    public const char AliasAdmin = ']';
+    public const char AliasRadio = ';';
+    public const char AliasWhisper = ',';
+
+    private static readonly Dictionary<char, ChatSelectChannel> PrefixToChannel = new()
+    {
+        {AliasLocal, ChatSelectChannel.Local},
+        {AliasWhisper, ChatSelectChannel.Whisper},
+        {AliasConsole, ChatSelectChannel.Console},
+        {AliasOOC, ChatSelectChannel.OOC},
+        {AliasEmotes, ChatSelectChannel.Emotes},
+        {AliasAdmin, ChatSelectChannel.Admin},
+        {AliasRadio, ChatSelectChannel.Radio},
+        {AliasDead, ChatSelectChannel.Dead}
+    };
+
+    private static readonly Dictionary<ChatSelectChannel, char> ChannelPrefixes =
+        PrefixToChannel.ToDictionary(kv => kv.Value, kv => kv.Key);
+
+    /// <summary>
+    ///     The max amount of chars allowed to fit in a single speech bubble.
+    /// </summary>
+    private const int SingleBubbleCharLimit = 100;
+
+    /// <summary>
+    ///     Base queue delay each speech bubble has.
+    /// </summary>
+    private const float BubbleDelayBase = 0.2f;
+
+    /// <summary>
+    ///     Factor multiplied by speech bubble char length to add to delay.
+    /// </summary>
+    private const float BubbleDelayFactor = 0.8f / SingleBubbleCharLimit;
+
+    /// <summary>
+    ///     The max amount of speech bubbles over a single entity at once.
+    /// </summary>
+    private const int SpeechBubbleCap = 4;
+
+    private LayoutContainer _speechBubbleRoot = default!;
+
+    /// <summary>
+    ///     Speech bubbles that are currently visible on screen.
+    ///     We track them to push them up when new ones get added.
+    /// </summary>
+    private readonly Dictionary<EntityUid, List<SpeechBubble>> _activeSpeechBubbles =
+        new();
+
+    /// <summary>
+    ///     Speech bubbles that are to-be-sent because of the "rate limit" they have.
+    /// </summary>
+    private readonly Dictionary<EntityUid, SpeechBubbleQueueData> _queuedSpeechBubbles
+        = new();
+
+    private readonly HashSet<ChatBox> _chats = new();
+
+    /// <summary>
+    ///     The max amount of characters an entity can send in one message
+    /// </summary>
+    public int MaxMessageLength => _config.GetCVar(CCVars.ChatMaxMessageLength);
+
+    /// <summary>
+    /// For currently disabled chat filters,
+    /// unread messages (messages received since the channel has been filtered out).
+    /// </summary>
+    private readonly Dictionary<ChatChannel, int> _unreadMessages = new();
+
+    public readonly List<StoredChatMessage> History = new();
+
+    // Maintains which channels a client should be able to filter (for showing in the chatbox)
+    // and select (for attempting to send on).
+    // This may not always actually match with what the server will actually allow them to
+    // send / receive on, it is only what the user can select in the UI. For example,
+    // if a user is silenced from speaking for some reason this may still contain ChatChannel.Local, it is left up
+    // to the server to handle invalid attempts to use particular channels and not send messages for
+    // channels the user shouldn't be able to hear.
+    //
+    // Note that Command is an available selection in the chatbox channel selector,
+    // which is not actually a chat channel but is always available.
+    public ChatSelectChannel CanSendChannels { get; private set; }
+    public ChatChannel FilterableChannels { get; private set; }
+    public ChatSelectChannel SelectableChannels { get; private set; }
+    private ChatSelectChannel PreferredChannel { get; set; } = ChatSelectChannel.OOC;
+
+    public event Action<ChatSelectChannel>? CanSendChannelsChanged;
+    public event Action<ChatChannel>? FilterableChannelsChanged;
+    public event Action<ChatSelectChannel>? SelectableChannelsChanged;
+    public event Action<ChatChannel, int?>? UnreadMessageCountsUpdated;
+    public event Action<StoredChatMessage>? MessageAdded;
+
+    public override void Initialize()
+    {
+        _sawmill = Logger.GetSawmill("chat");
+        _sawmill.Level = LogLevel.Info;
+        _admin.AdminStatusUpdated += UpdateChannelPermissions;
+        _player.LocalPlayerChanged += OnLocalPlayerChanged;
+        _state.OnStateChanged += StateChanged;
+        _net.RegisterNetMessage<MsgChatMessage>(OnChatMessage);
+
+        _speechBubbleRoot = new LayoutContainer();
+
+        OnLocalPlayerChanged(new LocalPlayerChangedEventArgs(null, _player.LocalPlayer));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusChat,
+            InputCmdHandler.FromDelegate(_ => FocusChat()));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusLocalChat,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Local)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusWhisperChat,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Whisper)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusOOC,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.OOC)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusAdminChat,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Admin)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusRadio,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Radio)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusDeadChat,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Dead)));
+
+        _input.SetInputCommand(ContentKeyFunctions.FocusConsoleChat,
+            InputCmdHandler.FromDelegate(_ => FocusChannel(ChatSelectChannel.Console)));
+
+        _input.SetInputCommand(ContentKeyFunctions.CycleChatChannelForward,
+            InputCmdHandler.FromDelegate(_ => CycleChatChannel(true)));
+
+        _input.SetInputCommand(ContentKeyFunctions.CycleChatChannelBackward,
+            InputCmdHandler.FromDelegate(_ => CycleChatChannel(false)));
+    }
+
+    private void FocusChat()
+    {
+        foreach (var chat in _chats)
+        {
+            if (!chat.Main)
+                continue;
+
+            chat.Focus();
+            break;
+        }
+    }
+
+    private void FocusChannel(ChatSelectChannel channel)
+    {
+        foreach (var chat in _chats)
+        {
+            if (!chat.Main)
+                continue;
+
+            chat.Focus(channel);
+            break;
+        }
+    }
+
+    private void CycleChatChannel(bool forward)
+    {
+        foreach (var chat in _chats)
+        {
+            if (!chat.Main)
+                continue;
+
+            chat.CycleChatChannel(forward);
+            break;
+        }
+    }
+
+    private void StateChanged(StateChangedEventArgs args)
+    {
+        if (args.NewState is GameplayState)
+        {
+            PreferredChannel = ChatSelectChannel.Local;
+        }
+
+        UpdateChannelPermissions();
+
+        if (_speechBubbleRoot.Parent == UIManager.StateRoot)
+            return;
+
+        _speechBubbleRoot.Orphan();
+        LayoutContainer.SetAnchorPreset(_speechBubbleRoot, LayoutContainer.LayoutPreset.Wide);
+        UIManager.StateRoot.AddChild(_speechBubbleRoot);
+        _speechBubbleRoot.SetPositionFirst();
+    }
+
+    private void OnLocalPlayerChanged(LocalPlayerChangedEventArgs obj)
+    {
+        if (obj.OldPlayer != null)
+        {
+            obj.OldPlayer.EntityAttached -= OnLocalPlayerEntityAttached;
+            obj.OldPlayer.EntityDetached -= OnLocalPlayerEntityDetached;
+        }
+
+        if (obj.NewPlayer != null)
+        {
+            obj.NewPlayer.EntityAttached += OnLocalPlayerEntityAttached;
+            obj.NewPlayer.EntityDetached += OnLocalPlayerEntityDetached;
+        }
+
+        UpdateChannelPermissions();
+    }
+
+    private void OnLocalPlayerEntityAttached(EntityAttachedEventArgs obj)
+    {
+        UpdateChannelPermissions();
+    }
+
+    private void OnLocalPlayerEntityDetached(EntityDetachedEventArgs obj)
+    {
+        UpdateChannelPermissions();
+    }
+
+    private void AddSpeechBubble(MsgChatMessage msg, SpeechBubble.SpeechType speechType)
+    {
+        if (!_entities.EntityExists(msg.SenderEntity))
+        {
+            _sawmill.Debug("Got local chat message with invalid sender entity: {0}", msg.SenderEntity);
+            return;
+        }
+
+        var messages = SplitMessage(FormattedMessage.RemoveMarkup(msg.Message));
+
+        foreach (var message in messages)
+        {
+            EnqueueSpeechBubble(msg.SenderEntity, message, speechType);
+        }
+    }
+
+    private void CreateSpeechBubble(EntityUid entity, SpeechBubbleData speechData)
+    {
+        var bubble =
+            SpeechBubble.CreateSpeechBubble(speechData.Type, speechData.Message, entity, _eye, _manager, _entities);
+
+        bubble.OnDied += SpeechBubbleDied;
+
+        if (_activeSpeechBubbles.TryGetValue(entity, out var existing))
+        {
+            // Push up existing bubbles above the mob's head.
+            foreach (var existingBubble in existing)
+            {
+                existingBubble.VerticalOffset += bubble.ContentSize.Y;
+            }
+        }
+        else
+        {
+            existing = new List<SpeechBubble>();
+            _activeSpeechBubbles.Add(entity, existing);
+        }
+
+        existing.Add(bubble);
+        _speechBubbleRoot.AddChild(bubble);
+
+        if (existing.Count > SpeechBubbleCap)
+        {
+            // Get the oldest to start fading fast.
+            var last = existing[0];
+            last.FadeNow();
+        }
+    }
+
+    private void SpeechBubbleDied(EntityUid entity, SpeechBubble bubble)
+    {
+        RemoveSpeechBubble(entity, bubble);
+    }
+
+    private void EnqueueSpeechBubble(EntityUid entity, string contents, SpeechBubble.SpeechType speechType)
+    {
+        // Don't enqueue speech bubbles for other maps. TODO: Support multiple viewports/maps?
+        if (_entities.GetComponent<TransformComponent>(entity).MapID != _eye.CurrentMap)
+            return;
+
+        if (!_queuedSpeechBubbles.TryGetValue(entity, out var queueData))
+        {
+            queueData = new SpeechBubbleQueueData();
+            _queuedSpeechBubbles.Add(entity, queueData);
+        }
+
+        queueData.MessageQueue.Enqueue(new SpeechBubbleData(contents, speechType));
+    }
+
+    public void RemoveSpeechBubble(EntityUid entityUid, SpeechBubble bubble)
+    {
+        bubble.Dispose();
+
+        var list = _activeSpeechBubbles[entityUid];
+        list.Remove(bubble);
+
+        if (list.Count == 0)
+        {
+            _activeSpeechBubbles.Remove(entityUid);
+        }
+    }
+
+    public static string GetChannelSelectorName(ChatSelectChannel channelSelector)
+    {
+        return channelSelector.ToString();
+    }
+
+    public static char GetChannelSelectorPrefix(ChatSelectChannel channelSelector)
+    {
+        return channelSelector switch
+        {
+            ChatSelectChannel.Local => '.',
+            ChatSelectChannel.Whisper => ',',
+            ChatSelectChannel.Radio => ';',
+            ChatSelectChannel.LOOC => '(',
+            ChatSelectChannel.OOC => '[',
+            ChatSelectChannel.Emotes => '@',
+            ChatSelectChannel.Dead => '\\',
+            ChatSelectChannel.Admin => ']',
+            ChatSelectChannel.Console => '/',
+            _ => ' '
+        };
+    }
+
+    private void UpdateChannelPermissions()
+    {
+        CanSendChannels = default;
+        FilterableChannels = default;
+
+        // Can always send console stuff.
+        CanSendChannels |= ChatSelectChannel.Console;
+
+        // can always send/recieve OOC
+        CanSendChannels |= ChatSelectChannel.OOC;
+        CanSendChannels |= ChatSelectChannel.LOOC;
+        FilterableChannels |= ChatChannel.OOC;
+        FilterableChannels |= ChatChannel.LOOC;
+
+        // can always hear server (nobody can actually send server messages).
+        FilterableChannels |= ChatChannel.Server;
+
+        if (_state.CurrentState is GameplayStateBase)
+        {
+            // can always hear local / radio / emote when in the game
+            FilterableChannels |= ChatChannel.Local;
+            FilterableChannels |= ChatChannel.Whisper;
+            FilterableChannels |= ChatChannel.Radio;
+            FilterableChannels |= ChatChannel.Emotes;
+
+            // Can only send local / radio / emote when attached to a non-ghost entity.
+            // TODO: this logic is iffy (checking if controlling something that's NOT a ghost), is there a better way to check this?
+            if (_ghost is not {IsGhost: true})
+            {
+                CanSendChannels |= ChatSelectChannel.Local;
+                CanSendChannels |= ChatSelectChannel.Whisper;
+                CanSendChannels |= ChatSelectChannel.Radio;
+                CanSendChannels |= ChatSelectChannel.Emotes;
+            }
+        }
+
+        // Only ghosts and admins can send / see deadchat.
+        if (_admin.HasFlag(AdminFlags.Admin) || _ghost is {IsGhost: true})
+        {
+            FilterableChannels |= ChatChannel.Dead;
+            CanSendChannels |= ChatSelectChannel.Dead;
+        }
+
+        // only admins can see / filter asay
+        if (_admin.HasFlag(AdminFlags.Admin))
+        {
+            FilterableChannels |= ChatChannel.Admin;
+            CanSendChannels |= ChatSelectChannel.Admin;
+        }
+
+        SelectableChannels = CanSendChannels & ~ChatSelectChannel.Console;
+
+        // Necessary so that we always have a channel to fall back to.
+        DebugTools.Assert((CanSendChannels & ChatSelectChannel.OOC) != 0, "OOC must always be available");
+        DebugTools.Assert((FilterableChannels & ChatChannel.OOC) != 0, "OOC must always be available");
+        DebugTools.Assert((SelectableChannels & ChatSelectChannel.OOC) != 0, "OOC must always be available");
+
+        // let our chatbox know all the new settings
+        CanSendChannelsChanged?.Invoke(CanSendChannels);
+        FilterableChannelsChanged?.Invoke(FilterableChannels);
+        SelectableChannelsChanged?.Invoke(SelectableChannels);
+    }
+
+    public void ClearUnfilteredUnreads(ChatChannel channels)
+    {
+        foreach (var channel in _unreadMessages.Keys.ToArray())
+        {
+            if ((channels & channel) == 0)
+                continue;
+
+            _unreadMessages[channel] = 0;
+            UnreadMessageCountsUpdated?.Invoke(channel, 0);
+        }
+    }
+
+    public override void FrameUpdate(FrameEventArgs delta)
+    {
+        UpdateQueuedSpeechBubbles(delta);
+    }
+
+    private void UpdateQueuedSpeechBubbles(FrameEventArgs delta)
+    {
+        // Update queued speech bubbles.
+        if (_queuedSpeechBubbles.Count == 0 || _examine == null)
+        {
+            return;
+        }
+
+        foreach (var (entity, queueData) in _queuedSpeechBubbles.ShallowClone())
+        {
+            if (!_entities.EntityExists(entity))
+            {
+                _queuedSpeechBubbles.Remove(entity);
+                continue;
+            }
+
+            queueData.TimeLeft -= delta.DeltaSeconds;
+            if (queueData.TimeLeft > 0)
+            {
+                continue;
+            }
+
+            if (queueData.MessageQueue.Count == 0)
+            {
+                _queuedSpeechBubbles.Remove(entity);
+                continue;
+            }
+
+            var msg = queueData.MessageQueue.Dequeue();
+
+            queueData.TimeLeft += BubbleDelayBase + msg.Message.Length * BubbleDelayFactor;
+
+            // We keep the queue around while it has 0 items. This allows us to keep the timer.
+            // When the timer hits 0 and there's no messages left, THEN we can clear it up.
+            CreateSpeechBubble(entity, msg);
+        }
+
+        var player = _player.LocalPlayer?.ControlledEntity;
+        var predicate = static (EntityUid uid, (EntityUid compOwner, EntityUid? attachedEntity) data)
+            => uid == data.compOwner || uid == data.attachedEntity;
+        var playerPos = player != null
+            ? _entities.GetComponent<TransformComponent>(player.Value).MapPosition
+            : MapCoordinates.Nullspace;
+
+        var occluded = player != null && _examine.IsOccluded(player.Value);
+
+        foreach (var (ent, bubs) in _activeSpeechBubbles)
+        {
+            if (_entities.Deleted(ent))
+            {
+                SetBubbles(bubs, false);
+                continue;
+            }
+
+            if (ent == player)
+            {
+                SetBubbles(bubs, true);
+                continue;
+            }
+
+            var otherPos = _entities.GetComponent<TransformComponent>(ent).MapPosition;
+
+            if (occluded && !ExamineSystemShared.InRangeUnOccluded(
+                    playerPos,
+                    otherPos, 0f,
+                    (ent, player), predicate))
+            {
+                SetBubbles(bubs, false);
+                continue;
+            }
+
+            SetBubbles(bubs, true);
+        }
+    }
+
+    private void SetBubbles(List<SpeechBubble> bubbles, bool visible)
+    {
+        foreach (var bubble in bubbles)
+        {
+            bubble.Visible = visible;
+        }
+    }
+
+    private List<string> SplitMessage(string msg)
+    {
+        // Split message into words separated by spaces.
+        var words = msg.Split(' ');
+        var messages = new List<string>();
+        var currentBuffer = new List<string>();
+
+        // Really shoddy way to approximate word length.
+        // Yes, I am aware of all the crimes here.
+        // TODO: Improve this to use actual glyph width etc..
+        var currentWordLength = 0;
+        foreach (var word in words)
+        {
+            // +1 for the space.
+            currentWordLength += word.Length + 1;
+
+            if (currentWordLength > SingleBubbleCharLimit)
+            {
+                // Too long for the current speech bubble, flush it.
+                messages.Add(string.Join(" ", currentBuffer));
+                currentBuffer.Clear();
+
+                currentWordLength = word.Length;
+
+                if (currentWordLength > SingleBubbleCharLimit)
+                {
+                    // Word is STILL too long.
+                    // Truncate it with an ellipse.
+                    messages.Add($"{word.Substring(0, SingleBubbleCharLimit - 3)}...");
+                    currentWordLength = 0;
+                    continue;
+                }
+            }
+
+            currentBuffer.Add(word);
+        }
+
+        if (currentBuffer.Count != 0)
+        {
+            // Don't forget the last bubble.
+            messages.Add(string.Join(" ", currentBuffer));
+        }
+
+        return messages;
+    }
+
+    public ChatSelectChannel MapLocalIfGhost(ChatSelectChannel channel)
+    {
+        if (channel == ChatSelectChannel.Local && _ghost is {IsGhost: true})
+            return ChatSelectChannel.Dead;
+
+        return channel;
+    }
+
+    public (ChatSelectChannel channel, ReadOnlyMemory<char> text) SplitInputContents(string inputText)
+    {
+        var text = inputText.AsMemory().Trim();
+        if (text.Length == 0)
+            return default;
+
+        var prefixChar = text.Span[0];
+        var channel = PrefixToChannel.GetValueOrDefault(prefixChar);
+
+        if ((CanSendChannels & channel) != 0)
+            // Cut off prefix if it's valid and we can use the channel in question.
+            text = text[1..];
+        else
+            channel = 0;
+
+        channel = MapLocalIfGhost(channel);
+
+        // Trim from start again to cut out any whitespace between the prefix and message, if any.
+        return (channel, text.TrimStart());
+    }
+
+    public void SendMessage(ChatBox box, ChatSelectChannel channel)
+    {
+        _typingIndicator?.ClientSubmittedChatText();
+
+        if (!string.IsNullOrWhiteSpace(box.ChatInput.Input.Text))
+        {
+            var (prefixChannel, text) = SplitInputContents(box.ChatInput.Input.Text);
+
+            // Check if message is longer than the character limit
+            if (text.Length > MaxMessageLength)
+            {
+                var locWarning = Loc.GetString("chat-manager-max-message-length",
+                    ("maxMessageLength", MaxMessageLength));
+                box.AddLine(locWarning, Color.Orange);
+                return;
+            }
+
+            _manager.SendMessage(text, prefixChannel == 0 ? channel : prefixChannel);
+        }
+
+        box.ChatInput.Input.Clear();
+        box.UpdateSelectedChannel();
+        box.ChatInput.ReleaseKeyboardFocus();
+    }
+
+    private void OnChatMessage(MsgChatMessage msg)
+    {
+        // Log all incoming chat to repopulate when filter is un-toggled
+        if (!msg.HideChat)
+        {
+            var storedMessage = new StoredChatMessage(msg);
+            History.Add(storedMessage);
+            MessageAdded?.Invoke(storedMessage);
+
+            if (!storedMessage.Read)
+            {
+                _sawmill.Debug($"Message filtered: {storedMessage.Channel}: {storedMessage.Message}");
+                if (!_unreadMessages.TryGetValue(msg.Channel, out var count))
+                    count = 0;
+
+                count += 1;
+                _unreadMessages[msg.Channel] = count;
+                UnreadMessageCountsUpdated?.Invoke(msg.Channel, count);
+            }
+        }
+
+        // Local messages that have an entity attached get a speech bubble.
+        if (msg.SenderEntity == default)
+            return;
+
+        switch (msg.Channel)
+        {
+            case ChatChannel.Local:
+                AddSpeechBubble(msg, SpeechBubble.SpeechType.Say);
+                break;
+
+            case ChatChannel.Whisper:
+                AddSpeechBubble(msg, SpeechBubble.SpeechType.Whisper);
+                break;
+
+            case ChatChannel.Dead:
+                if (_ghost is not {IsGhost: true})
+                    break;
+
+                AddSpeechBubble(msg, SpeechBubble.SpeechType.Say);
+                break;
+
+            case ChatChannel.Emotes:
+                AddSpeechBubble(msg, SpeechBubble.SpeechType.Emote);
+                break;
+        }
+    }
+
+    public char GetPrefixFromChannel(ChatSelectChannel channel)
+    {
+        return ChannelPrefixes.GetValueOrDefault(channel);
+    }
+
+    public void RegisterChat(ChatBox chat)
+    {
+        _chats.Add(chat);
+    }
+
+    public void UnregisterChat(ChatBox chat)
+    {
+        _chats.Remove(chat);
+    }
+
+    public ChatSelectChannel GetPreferredChannel()
+    {
+        return MapLocalIfGhost(PreferredChannel);
+    }
+
+    private readonly record struct SpeechBubbleData(string Message, SpeechBubble.SpeechType Type);
+
+    private sealed class SpeechBubbleQueueData
+    {
+        /// <summary>
+        ///     Time left until the next speech bubble can appear.
+        /// </summary>
+        public float TimeLeft { get; set; }
+
+        public Queue<SpeechBubbleData> MessageQueue { get; } = new();
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelFilterButton.cs

@@ -0,0 +1,119 @@
+using Content.Client.Resources;
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+public sealed class ChannelFilterButton : ContainerButton
+{
+    private static readonly Color ColorNormal = Color.FromHex("#7b7e9e");
+    private static readonly Color ColorHovered = Color.FromHex("#9699bb");
+    private static readonly Color ColorPressed = Color.FromHex("#789B8C");
+    private readonly TextureRect _textureRect;
+    public readonly ChannelFilterPopup ChatFilterPopup;
+    private readonly ChatUIController _chatUIController;
+    private const int FilterDropdownOffset = 120;
+
+    public ChannelFilterButton()
+    {
+        _chatUIController = UserInterfaceManager.GetUIController<ChatUIController>();
+        var filterTexture = IoCManager.Resolve<IResourceCache>()
+            .GetTexture("/Textures/Interface/Nano/filter.svg.96dpi.png");
+
+        // needed for same reason as ChannelSelectorButton
+        Mode = ActionMode.Press;
+        EnableAllKeybinds = true;
+
+        AddChild(
+            (_textureRect = new TextureRect
+            {
+                Texture = filterTexture,
+                HorizontalAlignment = HAlignment.Center,
+                VerticalAlignment = VAlignment.Center
+            })
+        );
+        ToggleMode = true;
+        OnToggled += OnFilterButtonToggled;
+        ChatFilterPopup = UserInterfaceManager.CreatePopup<ChannelFilterPopup>();
+        ChatFilterPopup.OnVisibilityChanged += PopupVisibilityChanged;
+
+        _chatUIController.FilterableChannelsChanged += ChatFilterPopup.SetChannels;
+        _chatUIController.UnreadMessageCountsUpdated += ChatFilterPopup.UpdateUnread;
+        ChatFilterPopup.SetChannels(_chatUIController.FilterableChannels);
+    }
+
+    private void PopupVisibilityChanged(Control control)
+    {
+        Pressed = control.Visible;
+    }
+
+    private void OnFilterButtonToggled(ButtonToggledEventArgs args)
+    {
+        if (args.Pressed)
+        {
+            var globalPos = GlobalPosition;
+            var (minX, minY) = ChatFilterPopup.MinSize;
+            var box = UIBox2.FromDimensions(globalPos - (FilterDropdownOffset, 0),
+                (Math.Max(minX, ChatFilterPopup.MinWidth), minY));
+            ChatFilterPopup.Open(box);
+        }
+        else
+        {
+            ChatFilterPopup.Close();
+        }
+    }
+
+    protected override void KeyBindDown(GUIBoundKeyEventArgs args)
+    {
+        // needed since we need EnableAllKeybinds - don't double-send both UI click and Use
+        if (args.Function == EngineKeyFunctions.Use) return;
+        base.KeyBindDown(args);
+    }
+
+    private void UpdateChildColors()
+    {
+        if (_textureRect == null) return;
+        switch (DrawMode)
+        {
+            case DrawModeEnum.Normal:
+                _textureRect.ModulateSelfOverride = ColorNormal;
+                break;
+
+            case DrawModeEnum.Pressed:
+                _textureRect.ModulateSelfOverride = ColorPressed;
+                break;
+
+            case DrawModeEnum.Hover:
+                _textureRect.ModulateSelfOverride = ColorHovered;
+                break;
+
+            case DrawModeEnum.Disabled:
+                break;
+        }
+    }
+
+    protected override void DrawModeChanged()
+    {
+        base.DrawModeChanged();
+        UpdateChildColors();
+    }
+
+    protected override void StylePropertiesChanged()
+    {
+        base.StylePropertiesChanged();
+        UpdateChildColors();
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+
+        if (!disposing)
+            return;
+
+        _chatUIController.FilterableChannelsChanged -= ChatFilterPopup.SetChannels;
+        _chatUIController.UnreadMessageCountsUpdated -= ChatFilterPopup.UpdateUnread;
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelFilterCheckbox.cs

@@ -0,0 +1,33 @@
+using Content.Shared.Chat;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+public sealed class ChannelFilterCheckbox : CheckBox
+{
+    public readonly ChatChannel Channel;
+
+    public bool IsHidden => Parent == null;
+
+    public ChannelFilterCheckbox(ChatChannel channel)
+    {
+        Channel = channel;
+        Text = Loc.GetString($"hud-chatbox-channel-{Channel}");
+    }
+
+    private void UpdateText(int? unread)
+    {
+        var name = Loc.GetString($"hud-chatbox-channel-{Channel}");
+
+        if (unread > 0)
+            // todo: proper fluent stuff here.
+            name += " (" + (unread > 9 ? "9+" : unread) + ")";
+
+        Text = name;
+    }
+
+    public void UpdateUnreadCount(int? unread)
+    {
+        UpdateText(unread);
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelFilterPopup.xaml

@@ -0,0 +1,10 @@
+<controls:ChannelFilterPopup
+    xmlns="https://spacestation14.io"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Chat.Controls">
+    <PanelContainer Name="FilterPopupPanel" StyleClasses="BorderedWindowPanel">
+        <BoxContainer Orientation="Horizontal">
+            <Control MinSize="4 0"/>
+            <BoxContainer Name="FilterVBox" MinWidth="110" Margin="0 10" Orientation="Vertical" SeparationOverride="4"/>
+        </BoxContainer>
+    </PanelContainer>
+</controls:ChannelFilterPopup>

Content.Client/UserInterface/Systems/Chat/Controls/ChannelFilterPopup.xaml.cs

@@ -0,0 +1,94 @@
+using Content.Shared.Chat;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ChannelFilterPopup : Popup
+{
+    // order in which the available channel filters show up when available
+    private static readonly ChatChannel[] ChannelFilterOrder =
+    {
+        ChatChannel.Local,
+        ChatChannel.Whisper,
+        ChatChannel.Emotes,
+        ChatChannel.Radio,
+        ChatChannel.LOOC,
+        ChatChannel.OOC,
+        ChatChannel.Dead,
+        ChatChannel.Admin,
+        ChatChannel.Server
+    };
+
+    private readonly Dictionary<ChatChannel, ChannelFilterCheckbox> _filterStates = new();
+
+    public event Action<ChatChannel, bool>? OnChannelFilter;
+
+    public ChannelFilterPopup()
+    {
+        RobustXamlLoader.Load(this);
+    }
+
+    public bool IsActive(ChatChannel channel)
+    {
+        return _filterStates.TryGetValue(channel, out var checkbox) && checkbox.Pressed;
+    }
+
+    public ChatChannel GetActive()
+    {
+        ChatChannel active = 0;
+
+        foreach (var (key, value) in _filterStates)
+        {
+            if (value.IsHidden || !value.Pressed)
+            {
+                continue;
+            }
+
+            active |= key;
+        }
+
+        return active;
+    }
+
+    public void SetChannels(ChatChannel channels)
+    {
+        foreach (var channel in ChannelFilterOrder)
+        {
+            if (!_filterStates.TryGetValue(channel, out var checkbox))
+            {
+                checkbox = new ChannelFilterCheckbox(channel);
+                _filterStates.Add(channel, checkbox);
+                checkbox.OnPressed += CheckboxPressed;
+                checkbox.Pressed = true;
+            }
+
+            if ((channels & channel) == 0)
+            {
+                if (checkbox.Parent == FilterVBox)
+                {
+                    FilterVBox.RemoveChild(checkbox);
+                }
+            }
+            else if (checkbox.IsHidden)
+            {
+                FilterVBox.AddChild(checkbox);
+            }
+        }
+    }
+
+    private void CheckboxPressed(ButtonEventArgs args)
+    {
+        var checkbox = (ChannelFilterCheckbox) args.Button;
+        OnChannelFilter?.Invoke(checkbox.Channel, checkbox.Pressed);
+    }
+
+    public void UpdateUnread(ChatChannel channel, int? unread)
+    {
+        if (_filterStates.TryGetValue(channel, out var checkbox))
+            checkbox.UpdateUnreadCount(unread);
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelSelectorButton.cs

@@ -0,0 +1,110 @@
+using Content.Shared.Chat;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+/// <summary>
+/// Only needed to avoid the issue where right click on the button closes the popup
+/// but leaves the button highlighted.
+/// </summary>
+public sealed class ChannelSelectorButton : Button
+{
+    private readonly ChannelSelectorPopup _channelSelectorPopup;
+    public event Action<ChatSelectChannel>? OnChannelSelect;
+
+    public ChatSelectChannel SelectedChannel { get; private set; }
+
+    private const int SelectorDropdownOffset = 38;
+
+    public ChannelSelectorButton()
+    {
+        // needed so the popup is untoggled regardless of which key is pressed when hovering this button.
+        // If we don't have this, then right clicking the button while it's toggled on will hide
+        // the popup but keep the button toggled on
+        Name = "ChannelSelector";
+        Mode = ActionMode.Press;
+        EnableAllKeybinds = true;
+        ToggleMode = true;
+        OnToggled += OnSelectorButtonToggled;
+        _channelSelectorPopup = UserInterfaceManager.CreatePopup<ChannelSelectorPopup>();
+        _channelSelectorPopup.Selected += OnChannelSelected;
+        _channelSelectorPopup.OnVisibilityChanged += OnPopupVisibilityChanged;
+
+        if (_channelSelectorPopup.FirstChannel is { } firstSelector)
+        {
+            Select(firstSelector);
+        }
+    }
+
+    private void OnChannelSelected(ChatSelectChannel channel)
+    {
+        Select(channel);
+    }
+
+    private void OnPopupVisibilityChanged(Control control)
+    {
+        Pressed = control.Visible;
+    }
+
+    protected override void KeyBindDown(GUIBoundKeyEventArgs args)
+    {
+        // needed since we need EnableAllKeybinds - don't double-send both UI click and Use
+        if (args.Function == EngineKeyFunctions.Use) return;
+        base.KeyBindDown(args);
+    }
+
+    public void Select(ChatSelectChannel channel)
+    {
+        if (_channelSelectorPopup.Visible)
+        {
+            _channelSelectorPopup.Close();
+        }
+
+        if (SelectedChannel == channel) return;
+        SelectedChannel = channel;
+        UpdateChannelSelectButton(channel);
+
+        OnChannelSelect?.Invoke(channel);
+    }
+
+    public string ChannelSelectorName(ChatSelectChannel channel)
+    {
+        return Loc.GetString($"hud-chatbox-select-channel-{channel}");
+    }
+
+    public Color ChannelSelectColor(ChatSelectChannel channel)
+    {
+        return channel switch
+        {
+            ChatSelectChannel.Radio => Color.LimeGreen,
+            ChatSelectChannel.LOOC => Color.MediumTurquoise,
+            ChatSelectChannel.OOC => Color.LightSkyBlue,
+            ChatSelectChannel.Dead => Color.MediumPurple,
+            ChatSelectChannel.Admin => Color.Red,
+            _ => Color.DarkGray
+        };
+    }
+
+    public void UpdateChannelSelectButton(ChatSelectChannel channel)
+    {
+        Text = ChannelSelectorName(channel);
+        Modulate = ChannelSelectColor(channel);
+    }
+
+    private void OnSelectorButtonToggled(ButtonToggledEventArgs args)
+    {
+        if (args.Pressed)
+        {
+            var globalLeft = GlobalPosition.X;
+            var globalBot = GlobalPosition.Y + Height;
+            var box = UIBox2.FromDimensions((globalLeft, globalBot), (SizeBox.Width, SelectorDropdownOffset));
+            _channelSelectorPopup.Open(box);
+        }
+        else
+        {
+            _channelSelectorPopup.Close();
+        }
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelSelectorItemButton.cs

@@ -0,0 +1,21 @@
+using Content.Client.Stylesheets;
+using Content.Shared.Chat;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+public sealed class ChannelSelectorItemButton : Button
+{
+    public readonly ChatSelectChannel Channel;
+
+    public bool IsHidden => Parent == null;
+
+    public ChannelSelectorItemButton(ChatSelectChannel selector)
+    {
+        Channel = selector;
+        AddStyleClass(StyleNano.StyleClassChatChannelSelectorButton);
+        Text = ChatUIController.GetChannelSelectorName(selector);
+        var prefix = ChatUIController.GetChannelSelectorPrefix(selector);
+        if (prefix != default) Text = Loc.GetString("hud-chatbox-select-name-prefixed", ("name", Text), ("prefix", prefix));
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChannelSelectorPopup.cs

@@ -0,0 +1,184 @@
+using Content.Shared.Chat;
+using Robust.Client.UserInterface.Controls;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+public sealed class ChannelSelectorPopup : Popup
+{
+    // order in which the channels show up in the channel selector
+    public static readonly ChatSelectChannel[] ChannelSelectorOrder =
+    {
+        ChatSelectChannel.Local,
+        ChatSelectChannel.Whisper,
+        ChatSelectChannel.Emotes,
+        ChatSelectChannel.Radio,
+        ChatSelectChannel.LOOC,
+        ChatSelectChannel.OOC,
+        ChatSelectChannel.Dead,
+        ChatSelectChannel.Admin
+        // NOTE: Console is not in there and it can never be permanently selected.
+        // You can, however, still submit commands as console by prefixing with /.
+    };
+
+    private readonly BoxContainer _channelSelectorHBox;
+    private readonly Dictionary<ChatSelectChannel, ChannelSelectorItemButton> _selectorStates = new();
+    private readonly ChatUIController _chatUIController;
+
+    public event Action<ChatSelectChannel>? Selected;
+
+    public ChannelSelectorPopup()
+    {
+        _channelSelectorHBox = new BoxContainer
+        {
+            Orientation = BoxContainer.LayoutOrientation.Horizontal,
+            SeparationOverride = 1
+        };
+
+        _chatUIController = UserInterfaceManager.GetUIController<ChatUIController>();
+        _chatUIController.SelectableChannelsChanged += SetChannels;
+        SetChannels(_chatUIController.SelectableChannels);
+
+        AddChild(_channelSelectorHBox);
+    }
+
+    public ChatSelectChannel? FirstChannel
+    {
+        get
+        {
+            foreach (var selector in _selectorStates.Values)
+            {
+                if (!selector.IsHidden)
+                    return selector.Channel;
+            }
+
+            return null;
+        }
+    }
+
+    /*public ChatSelectChannel NextChannel()
+    {
+        var nextChannel = ChatUIController.GetNextChannelSelector(_activeSelector);
+        var index = 0;
+        while (_selectorStates[(int)nextChannel].IsHidden && index <= _selectorStates.Count)
+        {
+            nextChannel =  ChatUIController.GetNextChannelSelector(nextChannel);
+            index++;
+        }
+        _activeSelector = nextChannel;
+        return nextChannel;
+    }
+
+
+    private void SetupChannels(ChatUIController.ChannelSelectorSetup[] selectorData)
+    {
+        _channelSelectorHBox.DisposeAllChildren(); //cleanup old toggles
+        _selectorStates.Clear();
+        foreach (var channelSelectorData in selectorData)
+        {
+            var newSelectorButton = new ChannelSelectorItemButton(channelSelectorData);
+            _selectorStates.Add(newSelectorButton);
+            if (!newSelectorButton.IsHidden)
+            {
+                _channelSelectorHBox.AddChild(newSelectorButton);
+            }
+            newSelectorButton.OnPressed += OnSelectorPressed;
+        }
+    }
+
+    private void OnSelectorPressed(BaseButton.ButtonEventArgs args)
+    {
+        if (_selectorButton == null) return;
+        _selectorButton.SelectedChannel = ((ChannelSelectorItemButton) args.Button).Channel;
+    }
+
+    public void HideChannels(params ChatChannel[] channels)
+    {
+        foreach (var channel in channels)
+        {
+            if (!ChatUIController.ChannelToSelector.TryGetValue(channel, out var selector)) continue;
+            var selectorbutton = _selectorStates[(int)selector];
+            if (!selectorbutton.IsHidden)
+            {
+                _channelSelectorHBox.RemoveChild(selectorbutton);
+                if (_activeSelector != selector) continue; // do nothing
+                if (_channelSelectorHBox.Children.First() is ChannelSelectorItemButton button)
+                {
+                    _activeSelector = button.Channel;
+                }
+                else
+                {
+                    _activeSelector = ChatSelectChannel.None;
+                }
+            }
+        }
+    }
+    */
+
+    private bool IsPreferredAvailable()
+    {
+        var preferred = _chatUIController.MapLocalIfGhost(_chatUIController.GetPreferredChannel());
+        return _selectorStates.TryGetValue(preferred, out var selector) &&
+               !selector.IsHidden;
+    }
+
+    public void SetChannels(ChatSelectChannel channels)
+    {
+        var wasPreferredAvailable = IsPreferredAvailable();
+
+        _channelSelectorHBox.RemoveAllChildren();
+
+        foreach (var channel in ChannelSelectorOrder)
+        {
+            if (!_selectorStates.TryGetValue(channel, out var selector))
+            {
+                selector = new ChannelSelectorItemButton(channel);
+                _selectorStates.Add(channel, selector);
+                selector.OnPressed += OnSelectorPressed;
+            }
+
+            if ((channels & channel) == 0)
+            {
+                if (selector.Parent == _channelSelectorHBox)
+                {
+                    _channelSelectorHBox.RemoveChild(selector);
+                }
+            }
+            else if (selector.IsHidden)
+            {
+                _channelSelectorHBox.AddChild(selector);
+            }
+        }
+
+        var isPreferredAvailable = IsPreferredAvailable();
+        if (!wasPreferredAvailable && isPreferredAvailable)
+        {
+            Select(_chatUIController.GetPreferredChannel());
+        }
+        else if (wasPreferredAvailable && !isPreferredAvailable)
+        {
+            Select(ChatSelectChannel.OOC);
+        }
+    }
+
+    private void OnSelectorPressed(ButtonEventArgs args)
+    {
+        var button = (ChannelSelectorItemButton) args.Button;
+        Select(button.Channel);
+    }
+
+    private void Select(ChatSelectChannel channel)
+    {
+        Selected?.Invoke(channel);
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+
+        if (!disposing)
+            return;
+
+        _chatUIController.SelectableChannelsChanged -= SetChannels;
+    }
+}

Content.Client/UserInterface/Systems/Chat/Controls/ChatInputBox.cs

@@ -0,0 +1,53 @@
+using Content.Shared.Chat;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Chat.Controls;
+
+[Virtual]
+public class ChatInputBox : PanelContainer
+{
+    public readonly ChannelSelectorButton ChannelSelector;
+    public readonly HistoryLineEdit Input;
+    public readonly ChannelFilterButton FilterButton;
+    protected readonly BoxContainer Container;
+    protected ChatChannel ActiveChannel { get; private set; } = ChatChannel.Local;
+
+    public ChatInputBox()
+    {
+        Container = new BoxContainer
+        {
+            Orientation = BoxContainer.LayoutOrientation.Horizontal,
+            SeparationOverride = 4
+        };
+        AddChild(Container);
+
+        ChannelSelector = new ChannelSelectorButton
+        {
+            Name = "ChannelSelector",
+            ToggleMode = true,
+            StyleClasses = {"chatSelectorOptionButton"},
+            MinWidth = 75
+        };
+        Container.AddChild(ChannelSelector);
+        Input = new HistoryLineEdit
+        {
+            Name = "Input",
+            PlaceHolder = Loc.GetString("hud-chatbox-info"),
+            HorizontalExpand = true,
+            StyleClasses = {"chatLineEdit"}
+        };
+        Container.AddChild(Input);
+        FilterButton = new ChannelFilterButton
+        {
+            Name = "FilterButton",
+            StyleClasses = {"chatFilterOptionButton"}
+        };
+        Container.AddChild(FilterButton);
+        ChannelSelector.OnChannelSelect += UpdateActiveChannel;
+    }
+
+    private void UpdateActiveChannel(ChatSelectChannel selectedChannel)
+    {
+        ActiveChannel = (ChatChannel) selectedChannel;
+    }
+}

Content.Client/UserInterface/Systems/Chat/Widgets/ChatBox.xaml

@@ -0,0 +1,18 @@
+<widgets:ChatBox
+    xmlns="https://spacestation14.io"
+    xmlns:graphics="clr-namespace:Robust.Client.Graphics;assembly=Robust.Client"
+    xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Chat.Widgets"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Chat.Controls"
+    MouseFilter="Stop"
+    MinSize="465 225">
+    <PanelContainer>
+        <PanelContainer.PanelOverride>
+            <graphics:StyleBoxFlat BackgroundColor="#25252AAA" />
+        </PanelContainer.PanelOverride>
+
+        <BoxContainer Orientation="Vertical" SeparationOverride="4">
+            <OutputPanel Name="Contents" VerticalExpand="True" />
+            <controls:ChatInputBox Name="ChatInput" Access="Public" Margin="2"/>
+        </BoxContainer>
+    </PanelContainer>
+</widgets:ChatBox>

Content.Client/UserInterface/Systems/Chat/Widgets/ChatBox.xaml.cs

@@ -0,0 +1,214 @@
+using Content.Client.Chat;
+using Content.Client.Chat.TypingIndicator;
+using Content.Client.UserInterface.Systems.Chat.Controls;
+using Content.Shared.Chat;
+using Content.Shared.Input;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Input;
+using Robust.Shared.Utility;
+using static Robust.Client.UserInterface.Controls.LineEdit;
+
+namespace Content.Client.UserInterface.Systems.Chat.Widgets;
+
+[GenerateTypedNameReferences]
+#pragma warning disable RA0003
+public partial class ChatBox : Control
+#pragma warning restore RA0003
+{
+    private readonly ChatUIController _controller;
+
+    public bool Main { get; set; }
+
+    public ChatSelectChannel SelectedChannel => ChatInput.ChannelSelector.SelectedChannel;
+
+    public ChatBox()
+    {
+        RobustXamlLoader.Load(this);
+
+        ChatInput.Input.OnTextEntered += OnTextEntered;
+        ChatInput.Input.OnKeyBindDown += OnKeyBindDown;
+        ChatInput.Input.OnTextChanged += OnTextChanged;
+        ChatInput.ChannelSelector.OnChannelSelect += OnChannelSelect;
+        ChatInput.FilterButton.ChatFilterPopup.OnChannelFilter += OnChannelFilter;
+
+        _controller = UserInterfaceManager.GetUIController<ChatUIController>();
+        _controller.MessageAdded += OnMessageAdded;
+        _controller.RegisterChat(this);
+    }
+
+    private void OnTextEntered(LineEditEventArgs args)
+    {
+        _controller.SendMessage(this, SelectedChannel);
+    }
+
+    private void OnMessageAdded(StoredChatMessage msg)
+    {
+        var text = FormattedMessage.EscapeText(msg.Message);
+        if (!string.IsNullOrEmpty(msg.MessageWrap))
+        {
+            text = string.Format(msg.MessageWrap, text);
+        }
+
+        Logger.DebugS("chat", $"{msg.Channel}: {text}");
+        if (!ChatInput.FilterButton.ChatFilterPopup.IsActive(msg.Channel))
+        {
+            return;
+        }
+
+        msg.Read = true;
+
+        var color = msg.MessageColorOverride != Color.Transparent
+            ? msg.MessageColorOverride
+            : msg.Channel.TextColor();
+
+        AddLine(text, color);
+    }
+
+    private void OnChannelSelect(ChatSelectChannel channel)
+    {
+        UpdateSelectedChannel();
+    }
+
+    private void OnChannelFilter(ChatChannel channel, bool active)
+    {
+        Contents.Clear();
+
+        foreach (var message in _controller.History)
+        {
+            OnMessageAdded(message);
+        }
+
+        if (active)
+        {
+            _controller.ClearUnfilteredUnreads(channel);
+        }
+    }
+
+    public void AddLine(string message, Color color)
+    {
+        var formatted = new FormattedMessage(3);
+        formatted.PushColor(color);
+        formatted.AddMarkup(message);
+        formatted.Pop();
+        Contents.AddMessage(formatted);
+    }
+
+    public void UpdateSelectedChannel()
+    {
+        var (prefixChannel, _) = _controller.SplitInputContents(ChatInput.Input.Text);
+        var channel = prefixChannel == 0 ? SelectedChannel : prefixChannel;
+
+        ChatInput.ChannelSelector.UpdateChannelSelectButton(channel);
+    }
+
+    public void Focus(ChatSelectChannel? channel = null)
+    {
+        var input = ChatInput.Input;
+        var selectStart = Index.End;
+
+        if (channel != null)
+        {
+            channel = _controller.MapLocalIfGhost(channel.Value);
+
+            // Channel not selectable, just do NOTHING (not even focus).
+            if ((_controller.SelectableChannels & channel.Value) == 0)
+                return;
+
+            var (_, text) = _controller.SplitInputContents(input.Text);
+
+            var newPrefix = _controller.GetPrefixFromChannel(channel.Value);
+            DebugTools.Assert(newPrefix != default, "Focus channel must have prefix!");
+
+            if (channel == SelectedChannel)
+            {
+                // New selected channel is just the selected channel,
+                // just remove prefix (if any) and leave text unchanged.
+
+                input.Text = text.ToString();
+                selectStart = Index.Start;
+            }
+            else
+            {
+                // Change prefix to new focused channel prefix and leave text unchanged.
+                input.Text = string.Concat(newPrefix.ToString(), " ", text.Span);
+                selectStart = Index.FromStart(2);
+            }
+
+            ChatInput.ChannelSelector.Select(channel.Value);
+        }
+
+        input.IgnoreNext = true;
+        input.GrabKeyboardFocus();
+
+        input.CursorPosition = input.Text.Length;
+        input.SelectionStart = selectStart.GetOffset(input.Text.Length);
+    }
+
+    public void CycleChatChannel(bool forward)
+    {
+        var idx = Array.IndexOf(ChannelSelectorPopup.ChannelSelectorOrder, SelectedChannel);
+        do
+        {
+            // go over every channel until we find one we can actually select.
+            idx += forward ? 1 : -1;
+            idx = MathHelper.Mod(idx, ChannelSelectorPopup.ChannelSelectorOrder.Length);
+        } while ((_controller.SelectableChannels & ChannelSelectorPopup.ChannelSelectorOrder[idx]) == 0);
+
+        SafelySelectChannel(ChannelSelectorPopup.ChannelSelectorOrder[idx]);
+    }
+
+    public void SafelySelectChannel(ChatSelectChannel toSelect)
+    {
+        toSelect = _controller.MapLocalIfGhost(toSelect);
+        if ((_controller.SelectableChannels & toSelect) == 0)
+            return;
+
+        ChatInput.ChannelSelector.Select(toSelect);
+    }
+
+    private void OnKeyBindDown(GUIBoundKeyEventArgs args)
+    {
+        if (args.Function == EngineKeyFunctions.TextReleaseFocus)
+        {
+            ChatInput.Input.ReleaseKeyboardFocus();
+            args.Handle();
+            return;
+        }
+
+        if (args.Function == ContentKeyFunctions.CycleChatChannelForward)
+        {
+            CycleChatChannel(true);
+            args.Handle();
+            return;
+        }
+
+        if (args.Function == ContentKeyFunctions.CycleChatChannelBackward)
+        {
+            CycleChatChannel(false);
+            args.Handle();
+        }
+    }
+
+    private void OnTextChanged(LineEditEventArgs args)
+    {
+        // Update channel select button to correct channel if we have a prefix.
+        UpdateSelectedChannel();
+
+        // Warn typing indicator about change
+        EntitySystem.Get<TypingIndicatorSystem>().ClientChangedChatText();
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+
+        if (!disposing) return;
+        _controller.UnregisterChat(this);
+        ChatInput.Input.OnTextEntered -= OnTextEntered;
+        ChatInput.Input.OnKeyBindDown -= OnKeyBindDown;
+        ChatInput.Input.OnTextChanged -= OnTextChanged;
+        ChatInput.ChannelSelector.OnChannelSelect -= OnChannelSelect;
+    }
+}

Content.Client/UserInterface/Systems/Chat/Widgets/ResizableChatBox.cs

@@ -0,0 +1,235 @@
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+using Robust.Shared.Timing;
+
+namespace Content.Client.UserInterface.Systems.Chat.Widgets;
+
+public sealed class ResizableChatBox : ChatBox
+{
+        public ResizableChatBox()
+        {
+            IoCManager.InjectDependencies(this);
+        }
+// TODO: Revisit the resizing stuff after https://github.com/space-wizards/RobustToolbox/issues/1392 is done,
+        // Probably not "supposed" to inject IClyde, but I give up.
+        // I can't find any other way to allow this control to properly resize when the
+        // window is resized. Resized() isn't reliably called when resizing the window,
+        // and layoutcontainer anchor / margin don't seem to adjust how we need
+        // them to when the window is resized. We need it to be able to resize
+        // within some bounds so that it doesn't overlap other UI elements, while still
+        // being freely resizable within those bounds.
+        [Dependency] private readonly IClyde _clyde = default!;
+
+        private const int DragMarginSize = 7;
+        private const int MinDistanceFromBottom = 255;
+        private const int MinLeft = 500;
+        private DragMode _currentDrag = DragMode.None;
+        private Vector2 _dragOffsetTopLeft;
+        private Vector2 _dragOffsetBottomRight;
+
+        private byte _clampIn;
+
+        protected override void EnteredTree()
+        {
+            base.EnteredTree();
+
+            _clyde.OnWindowResized += ClydeOnOnWindowResized;
+        }
+
+        protected override void ExitedTree()
+        {
+            base.ExitedTree();
+
+            _clyde.OnWindowResized -= ClydeOnOnWindowResized;
+        }
+
+        protected override void KeyBindDown(GUIBoundKeyEventArgs args)
+        {
+            if (args.Function == EngineKeyFunctions.UIClick)
+            {
+                _currentDrag = GetDragModeFor(args.RelativePosition);
+
+                if (_currentDrag != DragMode.None)
+                {
+                    _dragOffsetTopLeft = args.PointerLocation.Position / UIScale - Position;
+                    _dragOffsetBottomRight = Position + Size - args.PointerLocation.Position / UIScale;
+                }
+            }
+
+            base.KeyBindDown(args);
+        }
+
+        protected override void KeyBindUp(GUIBoundKeyEventArgs args)
+        {
+
+            if (args.Function != EngineKeyFunctions.UIClick)
+                return;
+            if (_currentDrag != DragMode.None)
+            {
+                _dragOffsetTopLeft = _dragOffsetBottomRight = Vector2.Zero;
+                _currentDrag = DragMode.None;
+
+                // If this is done in MouseDown, Godot won't fire MouseUp as you need focus to receive MouseUps.
+                UserInterfaceManager.KeyboardFocused?.ReleaseKeyboardFocus();
+            }
+
+            base.KeyBindUp(args);
+        }
+
+
+        // TODO: this drag and drop stuff is somewhat duplicated from Robust BaseWindow but also modified
+        [Flags]
+        private enum DragMode : byte
+        {
+            None = 0,
+            Bottom = 1 << 1,
+            Left = 1 << 2
+        }
+
+        private DragMode GetDragModeFor(Vector2 relativeMousePos)
+        {
+            var mode = DragMode.None;
+
+            if (relativeMousePos.Y > Size.Y - DragMarginSize)
+            {
+                mode = DragMode.Bottom;
+            }
+
+            if (relativeMousePos.X < DragMarginSize)
+            {
+                mode |= DragMode.Left;
+            }
+
+            return mode;
+        }
+
+        protected override void MouseMove(GUIMouseMoveEventArgs args)
+        {
+            base.MouseMove(args);
+
+            if (Parent == null)
+                return;
+
+            if (_currentDrag == DragMode.None)
+            {
+                var cursor = CursorShape.Arrow;
+                var previewDragMode = GetDragModeFor(args.RelativePosition);
+                switch (previewDragMode)
+                {
+                    case DragMode.Bottom:
+                        cursor = CursorShape.VResize;
+                        break;
+
+                    case DragMode.Left:
+                        cursor = CursorShape.HResize;
+                        break;
+
+                    case DragMode.Bottom | DragMode.Left:
+                        cursor = CursorShape.Crosshair;
+                        break;
+                }
+
+                DefaultCursorShape = cursor;
+            }
+            else
+            {
+                var top = Rect.Top;
+                var bottom = Rect.Bottom;
+                var left = Rect.Left;
+                var right = Rect.Right;
+                var (minSizeX, minSizeY) = MinSize;
+                if ((_currentDrag & DragMode.Bottom) == DragMode.Bottom)
+                {
+                    bottom = Math.Max(args.GlobalPosition.Y + _dragOffsetBottomRight.Y, top + minSizeY);
+                }
+
+                if ((_currentDrag & DragMode.Left) == DragMode.Left)
+                {
+                    var maxX = right - minSizeX;
+                    left = Math.Min(args.GlobalPosition.X - _dragOffsetTopLeft.X, maxX);
+                }
+
+                ClampSize(left, bottom);
+            }
+        }
+
+        protected override void UIScaleChanged()
+        {
+            base.UIScaleChanged();
+            ClampAfterDelay();
+        }
+
+        private void ClydeOnOnWindowResized(WindowResizedEventArgs obj)
+        {
+            ClampAfterDelay();
+        }
+
+        private void ClampAfterDelay()
+        {
+            _clampIn = 2;
+        }
+
+        protected override void FrameUpdate(FrameEventArgs args)
+        {
+            base.FrameUpdate(args);
+
+            // we do the clamping after a delay (after UI scale / window resize)
+            // because we need to wait for our parent container to properly resize
+            // first, so we can calculate where we should go. If we do it right away,
+            // we won't have the correct values from the parent to know how to adjust our margins.
+            if (_clampIn <= 0)
+                return;
+
+            _clampIn -= 1;
+            if (_clampIn == 0)
+                ClampSize();
+        }
+
+        private void ClampSize(float? desiredLeft = null, float? desiredBottom = null)
+        {
+            if (Parent == null)
+                return;
+
+            // var top = Rect.Top;
+            var right = Rect.Right;
+            var left = desiredLeft ?? Rect.Left;
+            var bottom = desiredBottom ?? Rect.Bottom;
+
+            // clamp so it doesn't go too high or low (leave space for alerts UI)
+            var maxBottom = Parent.Size.Y - MinDistanceFromBottom;
+            if (maxBottom <= MinHeight)
+            {
+                // we can't fit in our given space (window made awkwardly small), so give up
+                // and overlap at our min height
+                bottom = MinHeight;
+            }
+            else
+            {
+                bottom = Math.Clamp(bottom, MinHeight, maxBottom);
+            }
+
+            var maxLeft = Parent.Size.X - MinWidth;
+            if (maxLeft <= MinLeft)
+            {
+                // window too narrow, give up and overlap at our max left
+                left = maxLeft;
+            }
+            else
+            {
+                left = Math.Clamp(left, MinLeft, maxLeft);
+            }
+
+            LayoutContainer.SetMarginLeft(this, -((right + 10) - left));
+            LayoutContainer.SetMarginBottom(this, bottom);
+        }
+
+        protected override void MouseExited()
+        {
+            base.MouseExited();
+
+            if (_currentDrag == DragMode.None)
+                DefaultCursorShape = CursorShape.Arrow;
+        }
+}

Content.Client/UserInterface/Systems/Crafting/CraftingUIController.cs

@@ -0,0 +1,34 @@
+using Content.Client.Construction.UI;
+using Content.Client.Gameplay;
+using Content.Client.UserInterface.Controls;
+using JetBrains.Annotations;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Systems.Crafting;
+
+[UsedImplicitly]
+public sealed class CraftingUIController : UIController, IOnStateChanged<GameplayState>
+{
+    private ConstructionMenuPresenter? _presenter;
+    private MenuButton? _craftingButton;
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_presenter == null);
+        _presenter = new ConstructionMenuPresenter();
+        _craftingButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().CraftingButton;
+        _craftingButton.OnToggled += _presenter.OnHudCraftingButtonToggled;
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_presenter == null)
+            return;
+        _craftingButton!.Pressed = false;
+        _craftingButton!.OnToggled -= _presenter.OnHudCraftingButtonToggled;
+        _craftingButton = null;
+        _presenter.Dispose();
+        _presenter = null;
+    }
+}

Content.Client/UserInterface/Systems/EscapeMenu/EscapeUIController.cs

@@ -1,8 +1,8 @@
 using Content.Client.Gameplay;
-using Content.Client.HUD;
 using Content.Client.Info;
 using Content.Client.Links;
 using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Info;
 using JetBrains.Annotations;
 using Robust.Client.Console;
 using Robust.Client.Input;
@@ -20,18 +20,20 @@ public sealed class EscapeUIController : UIController, IOnStateEntered<GameplayS
 {
     [Dependency] private readonly IClientConsoleHost _console = default!;
     [Dependency] private readonly IUriOpener _uri = default!;
-    [Dependency] private readonly IGameHud _gameHud = default!;
 
     private Options.UI.EscapeMenu? _escapeWindow;
 
+    private MenuButton? _escapeButton;
+
     public void OnStateEntered(GameplayState state)
     {
         DebugTools.Assert(_escapeWindow == null);
-        _gameHud.EscapeButtonToggled += GameHudOnEscapeButtonToggled;
+        _escapeButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().EscapeButton;
+        _escapeButton.OnPressed += EscapeButtonOnOnPressed;
 
         _escapeWindow = UIManager.CreateWindow<Options.UI.EscapeMenu>();
-        _escapeWindow.OnClose += () => { _gameHud.EscapeButtonDown = false; };
-        _escapeWindow.OnOpen +=  () => { _gameHud.EscapeButtonDown = true; };
+        _escapeWindow.OnClose += () => { _escapeButton.Pressed = false; };
+        _escapeWindow.OnOpen +=  () => { _escapeButton.Pressed = true; };
 
         _escapeWindow.ChangelogButton.OnPressed += _ =>
         {
@@ -43,7 +45,7 @@ public sealed class EscapeUIController : UIController, IOnStateEntered<GameplayS
         _escapeWindow.RulesButton.OnPressed += _ =>
         {
             CloseEscapeWindow();
-            new RulesAndInfoWindow().Open();
+            UIManager.GetUIController<InfoUIController>().OpenWindow();
         };
 
         _escapeWindow.DisconnectButton.OnPressed += _ =>
@@ -75,11 +77,6 @@ public sealed class EscapeUIController : UIController, IOnStateEntered<GameplayS
             .Register<EscapeUIController>();
     }
 
-    private void GameHudOnEscapeButtonToggled(bool obj)
-    {
-        ToggleWindow();
-    }
-
     public void OnStateExited(GameplayState state)
     {
         if (_escapeWindow != null)
@@ -87,12 +84,22 @@ public sealed class EscapeUIController : UIController, IOnStateEntered<GameplayS
             _escapeWindow.Dispose();
             _escapeWindow = null;
         }
-        _gameHud.EscapeButtonToggled -= GameHudOnEscapeButtonToggled;
-        _gameHud.EscapeButtonDown = false;
+
+        if (_escapeButton != null)
+        {
+            _escapeButton.OnPressed -= EscapeButtonOnOnPressed;
+            _escapeButton.Pressed = false;
+            _escapeButton = null;
+        }
 
         CommandBinds.Unregister<EscapeUIController>();
     }
 
+    private void EscapeButtonOnOnPressed(ButtonEventArgs obj)
+    {
+        ToggleWindow();
+    }
+
     private void CloseEscapeWindow()
     {
         _escapeWindow?.Close();
@@ -110,6 +117,7 @@ public sealed class EscapeUIController : UIController, IOnStateEntered<GameplayS
         else
         {
             _escapeWindow.OpenCentered();
+            _escapeButton!.Pressed = true;
         }
     }
 }

Content.Client/UserInterface/Systems/Ghost/Controls/GhostTargetWindow.xaml.cs

@@ -10,15 +10,13 @@ namespace Content.Client.UserInterface.Systems.Ghost.Controls
     [GenerateTypedNameReferences]
     public sealed partial class GhostTargetWindow : DefaultWindow
     {
-        private readonly IEntityNetworkManager _netManager;
-
         private List<(string, EntityUid)> _warps = new();
 
-        public GhostTargetWindow(IEntityNetworkManager netManager)
+        public event Action<EntityUid>? WarpClicked;
+
+        public GhostTargetWindow()
         {
             RobustXamlLoader.Load(this);
-
-            _netManager = netManager;
         }
 
         public void UpdateWarps(IEnumerable<GhostWarp> warps)
@@ -47,7 +45,7 @@ namespace Content.Client.UserInterface.Systems.Ghost.Controls
 
         private void AddButtons()
         {
-            foreach (var (name, warp) in _warps)
+            foreach (var (name, warpTarget) in _warps)
             {
                 var currentButtonRef = new Button
                 {
@@ -60,11 +58,7 @@ namespace Content.Client.UserInterface.Systems.Ghost.Controls
                     ClipText = true,
                 };
 
-                currentButtonRef.OnPressed += _ =>
-                {
-                    var msg = new GhostWarpToTargetRequestEvent(warp);
-                    _netManager.SendSystemNetworkMessage(msg);
-                };
+                currentButtonRef.OnPressed += _ => WarpClicked?.Invoke(warpTarget);
 
                 ButtonContainer.AddChild(currentButtonRef);
             }

Content.Client/UserInterface/Systems/Ghost/Controls/Roles/GhostRoleRulesWindow.xaml.cs

@@ -1,13 +1,12 @@
+using Content.Shared.CCVar;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Configuration;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
 
-using Content.Shared.CCVar;
-using Robust.Shared.Configuration;
-
 namespace Content.Client.UserInterface.Systems.Ghost.Controls.Roles
 {
     [GenerateTypedNameReferences]

Content.Client/UserInterface/Systems/Ghost/Controls/Roles/GhostRolesEntry.xaml.cs

@@ -1,4 +1,3 @@
-using System;
 using Content.Shared.Ghost.Roles;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.Controls;

Content.Client/UserInterface/Systems/Ghost/Controls/Roles/GhostRolesWindow.xaml.cs

@@ -1,4 +1,3 @@
-using System;
 using Content.Shared.Ghost.Roles;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.CustomControls;

Content.Client/UserInterface/Systems/Ghost/Controls/Roles/MakeGhostRoleEui.cs

@@ -4,8 +4,6 @@ using Content.Shared.Ghost.Roles;
 using JetBrains.Annotations;
 using Robust.Client.Console;
 using Robust.Client.Player;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Utility;
 
 namespace Content.Client.UserInterface.Systems.Ghost.Controls.Roles

Content.Client/UserInterface/Systems/Ghost/Controls/Roles/MakeGhostRoleWindow.xaml.cs

@@ -1,7 +1,6 @@
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Client.UserInterface.XAML;
-using Robust.Shared.GameObjects;
 using static Robust.Client.UserInterface.Controls.BaseButton;
 
 namespace Content.Client.UserInterface.Systems.Ghost.Controls.Roles

Content.Client/UserInterface/Systems/Ghost/GhostGui.cs

@@ -1,84 +0,0 @@
-using Content.Client.Ghost;
-using Content.Client.Stylesheets;
-using Content.Client.UserInterface.Systems.Ghost.Controls;
-using Content.Shared.Ghost;
-using Robust.Client.Console;
-using Robust.Client.UserInterface;
-using Robust.Client.UserInterface.Controls;
-using static Robust.Client.UserInterface.Controls.BoxContainer;
-
-namespace Content.Client.UserInterface.Systems.Ghost
-{
-    public sealed class GhostGui : Control
-    {
-        private readonly Button _returnToBody = new() {Text = Loc.GetString("ghost-gui-return-to-body-button") };
-        private readonly Button _ghostWarp = new() {Text = Loc.GetString("ghost-gui-ghost-warp-button") };
-        private readonly Button _ghostRoles = new();
-        private readonly GhostComponent _owner;
-        private readonly GhostSystem _system;
-
-        public GhostTargetWindow? TargetWindow { get; }
-
-        public GhostGui(GhostComponent owner, GhostSystem system, IEntityNetworkManager eventBus)
-        {
-            IoCManager.InjectDependencies(this);
-
-            _owner = owner;
-            _system = system;
-
-            TargetWindow = new GhostTargetWindow(eventBus);
-
-            MouseFilter = MouseFilterMode.Ignore;
-
-            _ghostWarp.OnPressed += _ =>
-            {
-                eventBus.SendSystemNetworkMessage(new GhostWarpsRequestEvent());
-                TargetWindow.Populate();
-                TargetWindow.OpenCentered();
-            };
-            _returnToBody.OnPressed += _ =>
-            {
-                var msg = new GhostReturnToBodyRequest();
-                eventBus.SendSystemNetworkMessage(msg);
-            };
-            _ghostRoles.OnPressed += _ => IoCManager.Resolve<IClientConsoleHost>()
-                .RemoteExecuteCommand(null, "ghostroles");
-
-            AddChild(new BoxContainer
-            {
-                Orientation = LayoutOrientation.Horizontal,
-                Children =
-                {
-                    _returnToBody,
-                    _ghostWarp,
-                    _ghostRoles,
-                }
-            });
-        }
-
-        public void Update()
-        {
-            _returnToBody.Disabled = !_owner.CanReturnToBody;
-            _ghostRoles.Text = Loc.GetString("ghost-gui-ghost-roles-button", ("count", _system.AvailableGhostRoleCount));
-            if (_system.AvailableGhostRoleCount != 0)
-            {
-                _ghostRoles.StyleClasses.Add(StyleBase.ButtonCaution);
-            }
-            else
-            {
-                _ghostRoles.StyleClasses.Remove(StyleBase.ButtonCaution);
-            }
-            TargetWindow?.Populate();
-        }
-
-        protected override void Dispose(bool disposing)
-        {
-            base.Dispose(disposing);
-
-            if (disposing)
-            {
-                TargetWindow?.Dispose();
-            }
-        }
-    }
-}

Content.Client/UserInterface/Systems/Ghost/GhostUIController.cs

@@ -0,0 +1,130 @@
+using Content.Client.Gameplay;
+using Content.Client.Ghost;
+using Content.Client.UserInterface.Systems.Ghost.Widgets;
+using Content.Shared.Ghost;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+
+namespace Content.Client.UserInterface.Systems.Ghost;
+
+// TODO hud refactor BEFORE MERGE fix ghost gui being too far up
+public sealed class GhostUIController : UIController, IOnStateChanged<GameplayState>, IOnSystemChanged<GhostSystem>
+{
+    [Dependency] private readonly IEntityNetworkManager _net = default!;
+
+    [UISystemDependency] private readonly GhostSystem? _system = default;
+
+    private GhostGui? Gui => UIManager.GetActiveUIWidgetOrNull<GhostGui>();
+
+    public void OnSystemLoaded(GhostSystem system)
+    {
+        system.PlayerRemoved += OnPlayerRemoved;
+        system.PlayerUpdated += OnPlayerUpdated;
+        system.PlayerAttached += OnPlayerAttached;
+        system.PlayerDetached += OnPlayerDetached;
+        system.GhostWarpsResponse += OnWarpsResponse;
+        system.GhostRoleCountUpdated += OnRoleCountUpdated;
+    }
+
+    public void OnSystemUnloaded(GhostSystem system)
+    {
+        system.PlayerRemoved -= OnPlayerRemoved;
+        system.PlayerUpdated -= OnPlayerUpdated;
+        system.PlayerAttached -= OnPlayerAttached;
+        system.PlayerDetached -= OnPlayerDetached;
+        system.GhostWarpsResponse -= OnWarpsResponse;
+        system.GhostRoleCountUpdated -= OnRoleCountUpdated;
+    }
+
+    private void UpdateGui()
+    {
+        Gui?.Update(_system?.AvailableGhostRoleCount, _system?.Player?.CanReturnToBody);
+    }
+
+    private void OnPlayerRemoved(GhostComponent component)
+    {
+        Gui?.Hide();
+    }
+
+    private void OnPlayerUpdated(GhostComponent component)
+    {
+        UpdateGui();
+    }
+
+    private void OnPlayerAttached(GhostComponent component)
+    {
+        if (Gui == null)
+            return;
+
+        Gui.Visible = true;
+        UpdateGui();
+    }
+
+    private void OnPlayerDetached()
+    {
+        Gui?.Hide();
+    }
+
+    private void OnWarpsResponse(GhostWarpsResponseEvent msg)
+    {
+        if (Gui?.TargetWindow is not { } window)
+            return;
+
+        window.UpdateWarps(msg.Warps);
+        window.Populate();
+    }
+
+    private void OnRoleCountUpdated(GhostUpdateGhostRoleCountEvent msg)
+    {
+        UpdateGui();
+    }
+
+    private void OnWarpClicked(EntityUid player)
+    {
+        var msg = new GhostWarpToTargetRequestEvent(player);
+        _net.SendSystemNetworkMessage(msg);
+    }
+
+    public void OnStateEntered(GameplayState state)
+    {
+        if (Gui == null)
+            return;
+
+        Gui.RequestWarpsPressed += RequestWarps;
+        Gui.ReturnToBodyPressed += ReturnToBody;
+        Gui.GhostRolesPressed += GhostRolesPressed;
+        Gui.TargetWindow.WarpClicked += OnWarpClicked;
+
+        Gui.Visible = _system?.IsGhost ?? false;
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (Gui == null)
+            return;
+
+        Gui.RequestWarpsPressed -= RequestWarps;
+        Gui.ReturnToBodyPressed -= ReturnToBody;
+        Gui.GhostRolesPressed -= GhostRolesPressed;
+        Gui.TargetWindow.WarpClicked -= OnWarpClicked;
+
+        Gui.Hide();
+    }
+
+    private void ReturnToBody()
+    {
+        _system?.ReturnToBody();
+    }
+
+    private void RequestWarps()
+    {
+        _system?.RequestWarps();
+        Gui?.TargetWindow.Populate();
+        Gui?.TargetWindow.OpenCentered();
+    }
+
+    private void GhostRolesPressed()
+    {
+        _system?.OpenGhostRoles();
+    }
+}

Content.Client/UserInterface/Systems/Ghost/Widgets/GhostGui.xaml

@@ -0,0 +1,9 @@
+<widgets:GhostGui xmlns="https://spacestation14.io"
+                  xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Ghost.Widgets"
+                  HorizontalAlignment="Center">
+    <BoxContainer Orientation="Horizontal">
+        <Button Name="ReturnToBodyButton" Text="{Loc ghost-gui-return-to-body-button}" />
+        <Button Name="GhostWarpButton" Text="{Loc ghost-gui-ghost-warp-button}" />
+        <Button Name="GhostRolesButton" />
+    </BoxContainer>
+</widgets:GhostGui>

Content.Client/UserInterface/Systems/Ghost/Widgets/GhostGui.xaml.cs

@@ -0,0 +1,66 @@
+using Content.Client.Stylesheets;
+using Content.Client.UserInterface.Systems.Ghost.Controls;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Ghost.Widgets;
+
+[GenerateTypedNameReferences]
+public sealed partial class GhostGui : UIWidget
+{
+    public GhostTargetWindow TargetWindow { get; }
+
+    public event Action? RequestWarpsPressed;
+    public event Action? ReturnToBodyPressed;
+    public event Action? GhostRolesPressed;
+
+    public GhostGui()
+    {
+        RobustXamlLoader.Load(this);
+
+        TargetWindow = new GhostTargetWindow();
+
+        MouseFilter = MouseFilterMode.Ignore;
+
+        GhostWarpButton.OnPressed += _ => RequestWarpsPressed?.Invoke();
+        ReturnToBodyButton.OnPressed += _ => ReturnToBodyPressed?.Invoke();
+        GhostRolesButton.OnPressed += _ => GhostRolesPressed?.Invoke();
+    }
+
+    public void Hide()
+    {
+        TargetWindow.Close();
+        Visible = false;
+    }
+
+    public void Update(int? roles, bool? canReturnToBody)
+    {
+        ReturnToBodyButton.Disabled = !canReturnToBody ?? true;
+
+        if (roles != null)
+        {
+            GhostRolesButton.Text = Loc.GetString("ghost-gui-ghost-roles-button", ("count", roles));
+            if (roles > 0)
+            {
+                GhostRolesButton.StyleClasses.Add(StyleBase.ButtonCaution);
+            }
+            else
+            {
+                GhostRolesButton.StyleClasses.Remove(StyleBase.ButtonCaution);
+            }
+        }
+
+        TargetWindow.Populate();
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+
+        if (disposing)
+        {
+            TargetWindow.Dispose();
+        }
+    }
+}

Content.Client/UserInterface/Systems/Hands/Controls/HandButton.cs

@@ -0,0 +1,25 @@
+using Content.Client.UserInterface.Controls;
+using Content.Shared.Hands.Components;
+
+namespace Content.Client.UserInterface.Systems.Hands.Controls;
+
+public sealed class HandButton : SlotControl
+{
+    public HandButton(string handName, HandLocation handLocation)
+    {
+        Name = "hand_" + handName;
+        SlotName = handName;
+        SetBackground(handLocation);
+    }
+
+    private void SetBackground(HandLocation handLoc)
+    {
+        ButtonTexturePath = handLoc switch
+        {
+            HandLocation.Left => "Slots/hand_l",
+            HandLocation.Middle => "Slots/hand_m",
+            HandLocation.Right => "Slots/hand_r",
+            _ => ButtonTexturePath
+        };
+    }
+}

Content.Client/UserInterface/Systems/Hands/Controls/HandsContainer.cs

@@ -0,0 +1,83 @@
+using System.Linq;
+using Content.Client.UserInterface.Systems.Inventory.Controls;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Hands.Controls;
+
+public sealed class HandsContainer : ItemSlotUIContainer<HandButton>
+{
+    private readonly GridContainer _grid;
+    public int ColumnLimit { get => _grid.Columns; set => _grid.Columns = value; }
+    public int MaxButtonCount { get; set; } = 0;
+
+    public HandsContainer()
+    {
+        AddChild(_grid = new GridContainer());
+        _grid.ExpandBackwards = true;
+    }
+
+    public override HandButton? AddButton(HandButton newButton)
+    {
+        if (MaxButtonCount > 0)
+        {
+            if (ButtonCount >= MaxButtonCount)
+                return null;
+
+            _grid.AddChild(newButton);
+        }
+        else
+        {
+            _grid.AddChild(newButton);
+        }
+
+        return base.AddButton(newButton);
+    }
+
+    public override void RemoveButton(string handName)
+    {
+        var button = GetButton(handName);
+        if (button == null)
+            return;
+        base.RemoveButton(button);
+        _grid.RemoveChild(button);
+    }
+
+    public bool TryGetLastButton(out HandButton? control)
+    {
+        if (Buttons.Count == 0)
+        {
+            control = null;
+            return false;
+        }
+
+        control = Buttons.Values.Last();
+        return true;
+    }
+
+    public bool TryRemoveLastHand(out HandButton? control)
+    {
+        var success = TryGetLastButton(out control);
+        if (control != null)
+            RemoveButton(control);
+        return success;
+    }
+
+    public void Clear()
+    {
+        ClearButtons();
+        _grid.DisposeAllChildren();
+    }
+
+    public IEnumerable<HandButton> GetButtons()
+    {
+        foreach (var child in _grid.Children)
+        {
+            if (child is HandButton hand)
+                yield return hand;
+        }
+    }
+
+    public bool IsFull => (MaxButtonCount != 0 && ButtonCount >= MaxButtonCount);
+
+    public int ButtonCount => _grid.ChildCount;
+}

Content.Client/UserInterface/Systems/Hands/HandsUIController.cs

@@ -0,0 +1,334 @@
+using Content.Client.Gameplay;
+using Content.Client.Hands;
+using Content.Client.Hands.Systems;
+using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Hands.Controls;
+using Content.Client.UserInterface.Systems.Hotbar.Widgets;
+using Content.Shared.Cooldown;
+using Content.Shared.Hands.Components;
+using Content.Shared.Input;
+using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Shared.Input;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+
+namespace Content.Client.UserInterface.Systems.Hands;
+
+public sealed class HandsUIController : UIController, IOnStateEntered<GameplayState>, IOnSystemChanged<HandsSystem>
+{
+    [Dependency] private readonly IEntityManager _entities = default!;
+
+    [UISystemDependency] private readonly HandsSystem _handsSystem = default!;
+
+    private readonly List<HandsContainer> _handsContainers = new();
+    private readonly Dictionary<string, int> _handContainerIndices = new();
+    private readonly Dictionary<string, HandButton> _handLookup = new();
+    private HandsComponent? _playerHandsComponent;
+    private HandButton? _activeHand = null;
+    private int _backupSuffix = 0; //this is used when autogenerating container names if they don't have names
+
+    private HotbarGui? HandsGui => UIManager.GetActiveUIWidgetOrNull<HotbarGui>();
+
+    public void OnSystemLoaded(HandsSystem system)
+    {
+        _handsSystem.OnPlayerAddHand += OnAddHand;
+        _handsSystem.OnPlayerItemAdded += OnItemAdded;
+        _handsSystem.OnPlayerItemRemoved += OnItemRemoved;
+        _handsSystem.OnPlayerSetActiveHand += SetActiveHand;
+        _handsSystem.OnPlayerRemoveHand += RemoveHand;
+        _handsSystem.OnPlayerHandsAdded += LoadPlayerHands;
+        _handsSystem.OnPlayerHandsRemoved += UnloadPlayerHands;
+        _handsSystem.OnPlayerHandBlocked += HandBlocked;
+        _handsSystem.OnPlayerHandUnblocked += HandUnblocked;
+    }
+
+    public void OnSystemUnloaded(HandsSystem system)
+    {
+        _handsSystem.OnPlayerAddHand -= OnAddHand;
+        _handsSystem.OnPlayerItemAdded -= OnItemAdded;
+        _handsSystem.OnPlayerItemRemoved -= OnItemRemoved;
+        _handsSystem.OnPlayerSetActiveHand -= SetActiveHand;
+        _handsSystem.OnPlayerRemoveHand -= RemoveHand;
+        _handsSystem.OnPlayerHandsAdded -= LoadPlayerHands;
+        _handsSystem.OnPlayerHandsRemoved -= UnloadPlayerHands;
+        _handsSystem.OnPlayerHandBlocked -= HandBlocked;
+        _handsSystem.OnPlayerHandUnblocked -= HandUnblocked;
+    }
+
+    private void OnAddHand(string name, HandLocation location)
+    {
+        AddHand(name, location);
+    }
+
+    private void HandPressed(GUIBoundKeyEventArgs args, SlotControl hand)
+    {
+        if (_playerHandsComponent == null)
+        {
+            return;
+        }
+
+        if (args.Function == ContentKeyFunctions.ExamineEntity)
+        {
+            _handsSystem.UIInventoryExamine(hand.SlotName);
+        }
+        else if (args.Function == EngineKeyFunctions.UseSecondary)
+        {
+            _handsSystem.UIHandOpenContextMenu(hand.SlotName);
+        }
+        else if (args.Function == EngineKeyFunctions.UIClick)
+        {
+            _handsSystem.UIHandClick(_playerHandsComponent, hand.SlotName);
+        }
+    }
+
+    private void UnloadPlayerHands()
+    {
+        if (HandsGui != null)
+            HandsGui.Visible = false;
+
+        _handContainerIndices.Clear();
+        _handLookup.Clear();
+        _playerHandsComponent = null;
+
+        foreach (var container in _handsContainers)
+        {
+            container.Clear();
+        }
+    }
+
+    private void LoadPlayerHands(HandsComponent handsComp)
+    {
+        DebugTools.Assert(_playerHandsComponent == null);
+        if (HandsGui != null)
+            HandsGui.Visible = true;
+
+        _playerHandsComponent = handsComp;
+        foreach (var (name, hand) in handsComp.Hands)
+        {
+            var handButton = AddHand(name, hand.Location);
+            handButton.SpriteView.Sprite = _entities.GetComponentOrNull<SpriteComponent>(hand.HeldEntity);
+        }
+
+        var activeHand = handsComp.ActiveHand;
+        if (activeHand == null)
+            return;
+        SetActiveHand(activeHand.Name);
+    }
+
+    private void HandBlocked(string handName)
+    {
+        if (!_handLookup.TryGetValue(handName, out var hand))
+        {
+            return;
+        }
+
+        hand.Blocked = true;
+    }
+
+    private void HandUnblocked(string handName)
+    {
+        if (!_handLookup.TryGetValue(handName, out var hand))
+        {
+            return;
+        }
+
+        hand.Blocked = false;
+    }
+
+    private int GetHandContainerIndex(string containerName)
+    {
+        if (!_handContainerIndices.TryGetValue(containerName, out var result))
+            return -1;
+        return result;
+    }
+
+    private void OnItemAdded(string name, EntityUid entity)
+    {
+        HandsGui?.UpdatePanelEntity(entity);
+        var hand = GetHand(name);
+        if (hand == null)
+            return;
+        if (_entities.TryGetComponent(entity, out ISpriteComponent? sprite))
+        {
+            hand.SpriteView.Sprite = sprite;
+        }
+    }
+
+    private void OnItemRemoved(string name, EntityUid entity)
+    {
+        HandsGui?.UpdatePanelEntity(null);
+        var hand = GetHand(name);
+        if (hand == null)
+            return;
+        hand.SpriteView.Sprite = null;
+    }
+
+    private HandsContainer GetFirstAvailableContainer()
+    {
+        if (_handsContainers.Count == 0)
+            throw new Exception("Could not find an attached hand hud container");
+        foreach (var container in _handsContainers)
+        {
+            if (container.IsFull)
+                continue;
+            return container;
+        }
+
+        throw new Exception("All attached hand hud containers were full!");
+    }
+
+    public bool TryGetHandContainer(string containerName, out HandsContainer? container)
+    {
+        container = null;
+        var containerIndex = GetHandContainerIndex(containerName);
+        if (containerIndex == -1)
+            return false;
+        container = _handsContainers[containerIndex];
+        return true;
+    }
+
+    //propagate hand activation to the hand system.
+    private void StorageActivate(GUIBoundKeyEventArgs args, SlotControl handControl)
+    {
+        _handsSystem.UIHandActivate(handControl.SlotName);
+    }
+
+    private void SetActiveHand(string? handName)
+    {
+        if (handName == null)
+        {
+            if (_activeHand != null)
+                _activeHand.Highlight = false;
+
+            HandsGui?.UpdatePanelEntity(null);
+            return;
+        }
+
+        if (!_handLookup.TryGetValue(handName, out var handControl) || handControl == _activeHand)
+            return;
+
+        if (_activeHand != null)
+            _activeHand.Highlight = false;
+
+        handControl.Highlight = true;
+        _activeHand = handControl;
+
+        if (HandsGui != null &&
+            _playerHandsComponent != null &&
+            _playerHandsComponent.Hands.TryGetValue(handName, out var hand))
+        {
+            HandsGui.UpdatePanelEntity(hand.HeldEntity);
+        }
+    }
+
+    private HandButton? GetHand(string handName)
+    {
+        _handLookup.TryGetValue(handName, out var handControl);
+        return handControl;
+    }
+
+    private HandButton AddHand(string handName, HandLocation location)
+    {
+        var button = new HandButton(handName, location);
+        button.StoragePressed += StorageActivate;
+        button.Pressed += HandPressed;
+
+        if (!_handLookup.TryAdd(handName, button))
+            throw new Exception("Tried to add hand with duplicate name to UI. Name:" + handName);
+
+        GetFirstAvailableContainer().AddButton(button);
+
+        return button;
+    }
+
+    private void RemoveHand(string handName)
+    {
+        RemoveHand(handName, out _);
+    }
+
+    private bool RemoveHand(string handName, out HandButton? handButton)
+    {
+        handButton = null;
+        if (!_handLookup.TryGetValue(handName, out handButton))
+            return false;
+        if (handButton.Parent is HandsContainer handContainer)
+        {
+            handContainer.RemoveButton(handButton);
+        }
+
+        _handLookup.Remove(handName);
+        handButton.Dispose();
+        return true;
+    }
+
+    public string RegisterHandContainer(HandsContainer handContainer)
+    {
+        var name = "HandContainer_" + _backupSuffix;
+        ;
+        if (handContainer.Name == null)
+        {
+            handContainer.Name = name;
+            _backupSuffix++;
+        }
+        else
+        {
+            name = handContainer.Name;
+        }
+
+        _handContainerIndices.Add(name, _handsContainers.Count);
+        _handsContainers.Add(handContainer);
+        return name;
+    }
+
+    public bool RemoveHandContainer(string handContainerName)
+    {
+        var index = GetHandContainerIndex(handContainerName);
+        if (index == -1)
+            return false;
+        _handContainerIndices.Remove(handContainerName);
+        _handsContainers.RemoveAt(index);
+        return true;
+    }
+
+    public bool RemoveHandContainer(string handContainerName, out HandsContainer? container)
+    {
+        var success = _handContainerIndices.TryGetValue(handContainerName, out var index);
+        container = _handsContainers[index];
+        _handContainerIndices.Remove(handContainerName);
+        _handsContainers.RemoveAt(index);
+        return success;
+    }
+
+    public void OnStateEntered(GameplayState state)
+    {
+        if (HandsGui != null)
+            HandsGui.Visible = _playerHandsComponent != null;
+    }
+
+    public override void FrameUpdate(FrameEventArgs args)
+    {
+        base.FrameUpdate(args);
+
+        // TODO this should be event based but 2 systems modify the same component differently for some reason
+        foreach (var container in _handsContainers)
+        {
+            foreach (var hand in container.GetButtons())
+            {
+                if (hand.Entity is not { } entity)
+                    return;
+
+                if (_entities.Deleted(entity) ||
+                    !_entities.TryGetComponent(entity, out ItemCooldownComponent? cooldown) ||
+                    cooldown is not { CooldownStart: { } start, CooldownEnd: { } end})
+                {
+                    hand.CooldownDisplay.Visible = false;
+                    return;
+                }
+
+                hand.CooldownDisplay.FromTime(start, end);
+            }
+        }
+    }
+}

Content.Client/UserInterface/Systems/Hotbar/HotbarUIController.cs

@@ -0,0 +1,21 @@
+using Content.Client.UserInterface.Systems.Hands;
+using Content.Client.UserInterface.Systems.Hands.Controls;
+using Content.Client.UserInterface.Systems.Inventory;
+using Content.Client.UserInterface.Systems.Inventory.Controls;
+using Robust.Client.UserInterface.Controllers;
+
+namespace Content.Client.UserInterface.Systems.Hotbar;
+
+public sealed class HotbarUIController : UIController
+{
+    private InventoryUIController? _inventory;
+    private HandsUIController? _hands;
+
+    public void Setup(HandsContainer handsContainer, ItemSlotButtonContainer inventoryBar, ItemStatusPanel handStatus)
+    {
+        _inventory = UIManager.GetUIController<InventoryUIController>();
+        _hands = UIManager.GetUIController<HandsUIController>();
+        _hands.RegisterHandContainer(handsContainer);
+        _inventory.RegisterInventoryBarContainer(inventoryBar);
+    }
+}

Content.Client/UserInterface/Systems/Hotbar/Widgets/HotbarGui.xaml

@@ -0,0 +1,50 @@
+<widgets:HotbarGui
+    xmlns="https://spacestation14.io"
+    xmlns:inventory="clr-namespace:Content.Client.UserInterface.Systems.Inventory.Controls"
+    xmlns:hands="clr-namespace:Content.Client.UserInterface.Systems.Hands.Controls"
+    xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Hotbar.Widgets"
+    Name="HotbarInterface"
+    VerticalExpand="False"
+    VerticalAlignment="Bottom"
+    Orientation="Vertical"
+    HorizontalAlignment="Center">
+    <inventory:ItemStatusPanel
+        Name="StatusPanel"
+        Visible="False"
+        HorizontalAlignment="Center"
+    />
+    <inventory:ItemSlotButtonContainer
+        Name="InventoryHotbar"
+        Visible="False"
+        Columns="10"
+        SlotGroup="Default"
+        ExpandBackwards="True"
+        VerticalExpand="True"
+        HorizontalAlignment="Center"
+        VerticalAlignment="Bottom"
+    />
+    <BoxContainer Orientation="Horizontal" Name="Hotbar">
+        <inventory:ItemSlotButtonContainer
+            Name="SecondHotbar"
+            SlotGroup="SecondHotbar"
+            VerticalAlignment="Bottom"
+            HorizontalAlignment="Right"
+            VerticalExpand="False"
+            Columns="6"
+            HorizontalExpand="True"/>
+        <hands:HandsContainer
+            Name="HandContainer"
+            Access="Protected"
+            HorizontalAlignment="Center"
+            ColumnLimit="6" />
+        <inventory:ItemSlotButtonContainer
+            Name="MainHotbar"
+            SlotGroup="MainHotbar"
+            VerticalExpand="False"
+            HorizontalAlignment="Left"
+            VerticalAlignment="Bottom"
+            HorizontalExpand="True"
+            Columns="6"
+            />
+    </BoxContainer>
+</widgets:HotbarGui>

Content.Client/UserInterface/Systems/Hotbar/Widgets/HotbarGui.xaml.cs

@@ -0,0 +1,31 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Hotbar.Widgets;
+
+[GenerateTypedNameReferences]
+public sealed partial class HotbarGui : UIWidget
+{
+    public HotbarGui()
+    {
+        RobustXamlLoader.Load(this);
+        StatusPanel.Update(null);
+        var hotbarController = UserInterfaceManager.GetUIController<HotbarUIController>();
+
+        hotbarController.Setup(HandContainer, InventoryHotbar, StatusPanel);
+        LayoutContainer.SetGrowVertical(this, LayoutContainer.GrowDirection.Begin);
+    }
+
+    public void UpdatePanelEntity(EntityUid? entity)
+    {
+        StatusPanel.Update(entity);
+        if (entity == null)
+        {
+            StatusPanel.Visible = false;
+            return;
+        }
+
+        StatusPanel.Visible = true;
+    }
+}

Content.Client/UserInterface/Systems/Info/InfoUIController.cs

@@ -0,0 +1,29 @@
+using Content.Client.Gameplay;
+using Content.Client.Info;
+using Robust.Client.UserInterface.Controllers;
+
+namespace Content.Client.UserInterface.Systems.Info;
+
+public sealed class InfoUIController : UIController, IOnStateExited<GameplayState>
+{
+    private RulesAndInfoWindow? _infoWindow;
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_infoWindow == null)
+            return;
+
+        _infoWindow.Dispose();
+        _infoWindow = null;
+    }
+
+    public void OpenWindow()
+    {
+        if (_infoWindow == null || _infoWindow.Disposed)
+        {
+            _infoWindow = UIManager.CreateWindow<RulesAndInfoWindow>();
+        }
+
+        _infoWindow?.OpenCentered();
+    }
+}

Content.Client/UserInterface/Systems/Inventory/Controls/InventoryDisplay.cs

@@ -0,0 +1,78 @@
+using Content.Client.UserInterface.Controls;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Controls;
+
+public sealed class InventoryDisplay : LayoutContainer
+{
+    private int Columns = 0;
+    private int Rows = 0;
+    private const int MarginThickness = 10;
+    private const int ButtonSpacing = 5;
+    private const int ButtonSize = 75;
+    private readonly Control resizer;
+
+    private readonly Dictionary<string, (SlotControl, Vector2i)> _buttons = new();
+
+    public InventoryDisplay()
+    {
+        resizer = new Control();
+        AddChild(resizer);
+    }
+
+    public SlotControl? AddButton(SlotControl newButton, Vector2i buttonOffset)
+    {
+        AddChild(newButton);
+        HorizontalExpand = true;
+        VerticalExpand = true;
+        InheritChildMeasure = true;
+        if (!_buttons.TryAdd(newButton.SlotName, (newButton, buttonOffset)))
+            Logger.Warning("Tried to add button without a slot!");
+        SetPosition(newButton, buttonOffset * ButtonSize + new Vector2(ButtonSpacing, ButtonSpacing));
+        UpdateSizeData(buttonOffset);
+        return newButton;
+    }
+
+    public SlotControl? GetButton(string slotName)
+    {
+        return !_buttons.TryGetValue(slotName, out var foundButton) ? null : foundButton.Item1;
+    }
+
+    private void UpdateSizeData(Vector2i buttonOffset)
+    {
+        var (x, _) = buttonOffset;
+        if (x > Columns)
+            Columns = x;
+        var (_, y) = buttonOffset;
+        if (y > Rows)
+            Rows = y;
+        resizer.SetHeight = (Rows + 1) * (ButtonSize + ButtonSpacing);
+        resizer.SetWidth = (Columns + 1) * (ButtonSize + ButtonSpacing);
+    }
+
+    public bool TryGetButton(string slotName, out SlotControl? button)
+    {
+        var success = _buttons.TryGetValue(slotName, out var buttonData);
+        button = buttonData.Item1;
+        return success;
+    }
+
+    public void RemoveButton(string slotName)
+    {
+        if (!_buttons.Remove(slotName))
+            return;
+        //recalculate the size of the control when a slot is removed
+        Columns = 0;
+        Rows = 0;
+        foreach (var (_, (_, buttonOffset)) in _buttons)
+        {
+            UpdateSizeData(buttonOffset);
+        }
+    }
+
+    public void ClearButtons()
+    {
+        Children.Clear();
+    }
+}

Content.Client/UserInterface/Systems/Inventory/Controls/ItemSlotButtonContainer.cs

@@ -0,0 +1,30 @@
+using Content.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Controls;
+
+public sealed class ItemSlotButtonContainer : ItemSlotUIContainer<SlotControl>
+{
+    private readonly InventoryUIController _inventoryController;
+    private string _slotGroup = "";
+
+    public string SlotGroup
+    {
+        get => _slotGroup;
+        set
+        {
+            _inventoryController.RemoveSlotGroup(SlotGroup);
+            _slotGroup = value;
+            _inventoryController.RegisterSlotGroupContainer(this);
+        }
+    }
+
+    public ItemSlotButtonContainer()
+    {
+        _inventoryController = UserInterfaceManager.GetUIController<InventoryUIController>();
+    }
+
+    ~ItemSlotButtonContainer()
+    {
+        _inventoryController.RemoveSlotGroup(SlotGroup);
+    }
+}

Content.Client/UserInterface/Systems/Inventory/Controls/ItemSlotUIContainer.cs

@@ -0,0 +1,129 @@
+using System.Diagnostics.CodeAnalysis;
+using Content.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Controls;
+
+public interface IItemslotUIContainer
+{
+    public bool TryRegisterButton(SlotControl control, string newSlotName);
+
+    public bool TryAddButton(SlotControl control);
+}
+
+[Virtual]
+public abstract class ItemSlotUIContainer<T> : GridContainer, IItemslotUIContainer where T : SlotControl
+{
+    protected readonly Dictionary<string, T> Buttons = new();
+
+    public virtual bool TryAddButton(T newButton, out T button)
+    {
+        var tempButton = AddButton(newButton);
+        if (tempButton == null)
+        {
+            button = newButton;
+            return false;
+        }
+
+        button = newButton;
+        return true;
+    }
+
+    public void ClearButtons()
+    {
+        foreach (var button in Buttons.Values)
+        {
+            button.Dispose();
+        }
+
+        Buttons.Clear();
+    }
+
+    public bool TryRegisterButton(SlotControl control, string newSlotName)
+    {
+        if (newSlotName == "")
+            return false;
+        if (!(control is T slotButton))
+            return false;
+        if (Buttons.TryGetValue(newSlotName, out var foundButton))
+        {
+            if (control == foundButton)
+                return true; //if the slotName is already set do nothing
+            throw new Exception("Could not update button to slot:" + newSlotName + " slot already assigned!");
+        }
+
+        Buttons.Remove(slotButton.SlotName);
+        AddButton(slotButton);
+        return true;
+    }
+
+    public bool TryAddButton(SlotControl control)
+    {
+        if (control is not T newButton)
+            return false;
+        return AddButton(newButton) != null;
+    }
+
+    public virtual T? AddButton(T newButton)
+    {
+        if (!Children.Contains(newButton) && newButton.Parent == null && newButton.SlotName != "")
+            AddChild(newButton);
+        return AddButtonToDict(newButton);
+    }
+
+    protected virtual T? AddButtonToDict(T newButton)
+    {
+        if (newButton.SlotName == "")
+        {
+            Logger.Warning("Could not add button " + newButton.Name + "No slotname");
+        }
+
+        return !Buttons.TryAdd(newButton.SlotName, newButton) ? null : newButton;
+    }
+
+    public virtual void RemoveButton(string slotName)
+    {
+        if (!Buttons.TryGetValue(slotName, out var button))
+            return;
+        RemoveButton(button);
+    }
+
+    public virtual void RemoveButtons(params string[] slotNames)
+    {
+        foreach (var slotName in slotNames)
+        {
+            RemoveButton(slotName);
+        }
+    }
+
+    public virtual void RemoveButtons(params T?[] buttons)
+    {
+        foreach (var button in buttons)
+        {
+            if (button != null)
+                RemoveButton(button);
+        }
+    }
+
+    protected virtual void RemoveButtonFromDict(T button)
+    {
+        Buttons.Remove(button.SlotName);
+    }
+
+    public virtual void RemoveButton(T button)
+    {
+        RemoveButtonFromDict(button);
+        Children.Remove(button);
+        button.Dispose();
+    }
+
+    public virtual T? GetButton(string slotName)
+    {
+        return !Buttons.TryGetValue(slotName, out var button) ? null : button;
+    }
+
+    public virtual bool TryGetButton(string slotName, [NotNullWhen(true)] out T? button)
+    {
+        return (button = GetButton(slotName)) != null;
+    }
+}

Content.Client/UserInterface/Systems/Inventory/Controls/ItemStatusPanel.xaml

@@ -0,0 +1,24 @@
+<controls:ItemStatusPanel
+    xmlns="https://spacestation14.io"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Inventory.Controls"
+    xmlns:graphics="clr-namespace:Robust.Client.Graphics;assembly=Robust.Client"
+    VerticalAlignment="Bottom"
+    HorizontalAlignment="Center"
+    MinSize="150 0">
+    <PanelContainer
+        Name="Panel"
+        ModulateSelfOverride="#FFFFFFE6"
+        HorizontalExpand="True">
+        <PanelContainer.PanelOverride>
+            <graphics:StyleBoxTexture
+                ContentMarginLeftOverride="6"
+                ContentMarginRightOverride="6"
+                ContentMarginTopOverride="4"
+                ContentMarginBottomOverride="4" />
+        </PanelContainer.PanelOverride>
+        <BoxContainer Orientation="Vertical" SeparationOverride="0">
+            <BoxContainer Name="StatusContents" Orientation="Vertical"/>
+            <Label Name="ItemNameLabel" ClipText="True" StyleClasses="ItemStatus"/>
+        </BoxContainer>
+    </PanelContainer>
+</controls:ItemStatusPanel>

Content.Client/UserInterface/Systems/Inventory/Controls/ItemStatusPanel.xaml.cs

@@ -0,0 +1,138 @@
+using Content.Client.Items;
+using Content.Client.Resources;
+using Content.Shared.Hands.Components;
+using Content.Shared.IdentityManagement;
+using Robust.Client.AutoGenerated;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+using static Content.Client.IoC.StaticIoC;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ItemStatusPanel : BoxContainer
+{
+    [Dependency] private readonly IEntityManager _entityManager = default!;
+
+    [ViewVariables] private EntityUid? _entity;
+
+    public ItemStatusPanel()
+    {
+        RobustXamlLoader.Load(this);
+        IoCManager.InjectDependencies(this);
+
+        SetSide(HandLocation.Middle);
+    }
+
+    public void SetSide(HandLocation location)
+    {
+        string texture;
+        StyleBox.Margin cutOut;
+        StyleBox.Margin flat;
+        Label.AlignMode textAlign;
+
+        switch (location)
+        {
+            case HandLocation.Left:
+                texture = "/Textures/Interface/Nano/item_status_right.svg.96dpi.png";
+                cutOut = StyleBox.Margin.Left | StyleBox.Margin.Top;
+                flat = StyleBox.Margin.Right | StyleBox.Margin.Bottom;
+                textAlign = Label.AlignMode.Right;
+                break;
+            case HandLocation.Middle:
+                texture = "/Textures/Interface/Nano/item_status_middle.svg.96dpi.png";
+                cutOut = StyleBox.Margin.Right | StyleBox.Margin.Top;
+                flat = StyleBox.Margin.Left | StyleBox.Margin.Bottom;
+                textAlign = Label.AlignMode.Left;
+                break;
+            case HandLocation.Right:
+                texture = "/Textures/Interface/Nano/item_status_left.svg.96dpi.png";
+                cutOut = StyleBox.Margin.Right | StyleBox.Margin.Top;
+                flat = StyleBox.Margin.Left | StyleBox.Margin.Bottom;
+                textAlign = Label.AlignMode.Left;
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(location), location, null);
+        }
+
+        var panel = (StyleBoxTexture) Panel.PanelOverride!;
+        panel.Texture = ResC.GetTexture(texture);
+        panel.SetPatchMargin(flat, 2);
+        panel.SetPatchMargin(cutOut, 13);
+
+        ItemNameLabel.Align = textAlign;
+    }
+
+    protected override void FrameUpdate(FrameEventArgs args)
+    {
+        base.FrameUpdate(args);
+        UpdateItemName();
+    }
+
+    public void Update(EntityUid? entity)
+    {
+        if (entity == null)
+        {
+            ClearOldStatus();
+            _entity = null;
+            Panel.Visible = false;
+            return;
+        }
+
+        if (entity != _entity)
+        {
+            _entity = entity.Value;
+            BuildNewEntityStatus();
+
+            UpdateItemName();
+        }
+
+        Panel.Visible = true;
+    }
+
+    private void UpdateItemName()
+    {
+        if (_entity == null)
+            return;
+
+        if (!_entityManager.TryGetComponent<MetaDataComponent>(_entity, out var meta) || meta.Deleted)
+        {
+            Update(null);
+            return;
+        }
+
+        if (_entityManager.TryGetComponent(_entity, out HandVirtualItemComponent? virtualItem)
+            && _entityManager.EntityExists(virtualItem.BlockingEntity))
+        {
+            // Uses identity because we can be blocked by pulling someone
+            ItemNameLabel.Text = Identity.Name(virtualItem.BlockingEntity, _entityManager);
+        }
+        else
+        {
+            ItemNameLabel.Text = Identity.Name(_entity.Value, _entityManager);
+        }
+    }
+
+    private void ClearOldStatus()
+    {
+        StatusContents.RemoveAllChildren();
+    }
+
+    private void BuildNewEntityStatus()
+    {
+        DebugTools.AssertNotNull(_entity);
+
+        ClearOldStatus();
+
+        var collectMsg = new ItemStatusCollectMessage();
+        _entityManager.EventBus.RaiseLocalEvent(_entity!.Value, collectMsg, true);
+
+        foreach (var control in collectMsg.Controls)
+        {
+            StatusContents.AddChild(control);
+        }
+    }
+}

Content.Client/UserInterface/Systems/Inventory/InventoryUIController.cs

@@ -0,0 +1,306 @@
+using Content.Client.Gameplay;
+using Content.Client.Inventory;
+using Content.Client.Storage;
+using Content.Client.UserInterface.Controls;
+using Content.Client.UserInterface.Systems.Inventory.Controls;
+using Content.Client.UserInterface.Systems.Inventory.Windows;
+using Content.Shared.Input;
+using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controllers;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Input;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Utility;
+using static Content.Client.Inventory.ClientInventorySystem;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.UserInterface.Systems.Inventory;
+
+public sealed class InventoryUIController : UIController, IOnStateEntered<GameplayState>, IOnStateExited<GameplayState>,
+    IOnSystemChanged<ClientInventorySystem>
+{
+    [Dependency] private readonly IEntityManager _entities = default!;
+
+    [UISystemDependency] private readonly ClientInventorySystem _inventorySystem = default!;
+
+    private ClientInventoryComponent? _playerInventory;
+    private readonly Dictionary<string, ItemSlotButtonContainer> _slotGroups = new();
+
+    private StrippingWindow? _strippingWindow;
+    private ItemSlotButtonContainer? _inventoryHotbar;
+    private MenuButton? _inventoryButton;
+
+    public void OnStateEntered(GameplayState state)
+    {
+        DebugTools.Assert(_strippingWindow == null);
+        _strippingWindow = UIManager.CreateWindow<StrippingWindow>();
+        _inventoryButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().InventoryButton;
+        LayoutContainer.SetAnchorPreset(_strippingWindow, LayoutContainer.LayoutPreset.Center);
+
+        //bind open inventory key to OpenInventoryMenu;
+        CommandBinds.Builder
+            .Bind(ContentKeyFunctions.OpenInventoryMenu, InputCmdHandler.FromDelegate(_ => ToggleInventoryBar()))
+            .Register<ClientInventorySystem>();
+        _inventoryButton.OnPressed += InventoryButtonPressed;
+    }
+
+    public void OnStateExited(GameplayState state)
+    {
+        if (_strippingWindow != null)
+        {
+            _strippingWindow.Dispose();
+            _strippingWindow = null;
+        }
+
+        if (_inventoryHotbar != null)
+        {
+            _inventoryHotbar.Visible = false;
+        }
+
+        if (_inventoryButton != null)
+        {
+            _inventoryButton.OnPressed -= InventoryButtonPressed;
+            _inventoryButton.Pressed = false;
+            _inventoryButton = null;
+        }
+
+        CommandBinds.Unregister<ClientInventorySystem>();
+    }
+
+    public void RegisterInventoryBarContainer(ItemSlotButtonContainer inventoryHotbar)
+    {
+        _inventoryHotbar = inventoryHotbar;
+    }
+
+    private void InventoryButtonPressed(ButtonEventArgs args)
+    {
+        ToggleInventoryBar();
+    }
+
+    private void UpdateInventoryHotbar(ClientInventoryComponent? clientInv)
+    {
+        if (clientInv == null)
+        {
+            _inventoryHotbar?.ClearButtons();
+            return;
+        }
+
+        foreach (var (_, data) in clientInv.SlotData)
+        {
+            if (!data.ShowInWindow || !_slotGroups.TryGetValue(data.SlotGroup, out var container))
+                continue;
+
+            if (!container.TryGetButton(data.SlotName, out var button))
+            {
+                button = new SlotButton(data);
+                button.Pressed += ItemPressed;
+                button.StoragePressed += StoragePressed;
+                container.AddButton(button);
+            }
+
+            var sprite = _entities.GetComponentOrNull<SpriteComponent>(data.HeldEntity);
+            var showStorage = _entities.HasComponent<ClientStorageComponent>(data.HeldEntity);
+            var update = new SlotSpriteUpdate(data.SlotGroup, data.SlotName, sprite, showStorage);
+            SpriteUpdated(update);
+        }
+    }
+
+    private void UpdateStrippingWindow(ClientInventoryComponent? clientInv)
+    {
+        if (clientInv == null)
+        {
+            _strippingWindow!.InventoryButtons.ClearButtons();
+            return;
+        }
+
+        foreach (var (_, data) in clientInv.SlotData)
+        {
+            if (!data.ShowInWindow)
+                continue;
+
+            if (!_strippingWindow!.InventoryButtons.TryGetButton(data.SlotName, out var button))
+            {
+                button = new SlotButton(data);
+                button.Pressed += ItemPressed;
+                button.StoragePressed += StoragePressed;
+                _strippingWindow!.InventoryButtons.AddButton(button, data.ButtonOffset);
+            }
+
+            var sprite = _entities.GetComponentOrNull<SpriteComponent>(data.HeldEntity);
+            var showStorage = _entities.HasComponent<ClientStorageComponent>(data.HeldEntity);
+            var update = new SlotSpriteUpdate(data.SlotGroup, data.SlotName, sprite, showStorage);
+            SpriteUpdated(update);
+        }
+    }
+
+    public void ToggleStrippingMenu()
+    {
+        UpdateStrippingWindow(_playerInventory);
+        if (_strippingWindow!.IsOpen)
+        {
+            _strippingWindow!.Close();
+            return;
+        }
+
+        _strippingWindow.Open();
+    }
+
+    public void ToggleInventoryBar()
+    {
+        if (_inventoryHotbar == null)
+        {
+            Logger.Warning("Tried to toggle inventory bar when none are assigned");
+            return;
+        }
+
+        UpdateInventoryHotbar(_playerInventory);
+        if (_inventoryHotbar.Visible)
+        {
+            _inventoryHotbar.Visible = false;
+            if (_inventoryButton != null)
+                _inventoryButton.Pressed = false;
+        }
+        else
+        {
+            _inventoryHotbar.Visible = true;
+            if (_inventoryButton != null)
+                _inventoryButton.Pressed = true;
+        }
+    }
+
+    // Neuron Activation
+    public void OnSystemLoaded(ClientInventorySystem system)
+    {
+        _inventorySystem.OnSlotAdded += AddSlot;
+        _inventorySystem.OnSlotRemoved += RemoveSlot;
+        _inventorySystem.OnLinkInventory += LoadSlots;
+        _inventorySystem.OnUnlinkInventory += UnloadSlots;
+        _inventorySystem.OnSpriteUpdate += SpriteUpdated;
+    }
+
+    // Neuron Deactivation
+    public void OnSystemUnloaded(ClientInventorySystem system)
+    {
+        _inventorySystem.OnSlotAdded -= AddSlot;
+        _inventorySystem.OnSlotRemoved -= RemoveSlot;
+        _inventorySystem.OnLinkInventory -= LoadSlots;
+        _inventorySystem.OnUnlinkInventory -= UnloadSlots;
+        _inventorySystem.OnSpriteUpdate -= SpriteUpdated;
+    }
+
+    private void ItemPressed(GUIBoundKeyEventArgs args, SlotControl control)
+    {
+        var slot = control.SlotName;
+
+        if (args.Function == EngineKeyFunctions.UIClick)
+        {
+            _inventorySystem.UIInventoryActivate(control.SlotName);
+            return;
+        }
+
+        if (args.Function == ContentKeyFunctions.ActivateItemInWorld)
+        {
+            _inventorySystem.UIInventoryStorageActivate(control.SlotName);
+            return;
+        }
+
+        if (_playerInventory == null)
+        {
+            return;
+        }
+
+        if (args.Function == ContentKeyFunctions.ExamineEntity)
+        {
+            _inventorySystem.UIInventoryExamine(slot, _playerInventory.Owner);
+        }
+        else if (args.Function == EngineKeyFunctions.UseSecondary)
+        {
+            _inventorySystem.UIInventoryOpenContextMenu(slot, _playerInventory.Owner);
+        }
+        else if (args.Function == ContentKeyFunctions.ActivateItemInWorld)
+        {
+            _inventorySystem.UIInventoryActivateItem(slot, _playerInventory.Owner);
+        }
+        else if (args.Function == ContentKeyFunctions.AltActivateItemInWorld)
+        {
+            _inventorySystem.UIInventoryAltActivateItem(slot, _playerInventory.Owner);
+        }
+    }
+
+    private void StoragePressed(GUIBoundKeyEventArgs args, SlotControl control)
+    {
+        _inventorySystem.UIInventoryStorageActivate(control.SlotName);
+    }
+
+    private void AddSlot(SlotData data)
+    {
+        if (!_slotGroups.TryGetValue(data.SlotGroup, out var slotGroup))
+            return;
+
+        var button = new SlotButton(data);
+        button.Pressed += ItemPressed;
+        button.StoragePressed += StoragePressed;
+        slotGroup.AddButton(button);
+    }
+
+    private void RemoveSlot(SlotData data)
+    {
+        if (!_slotGroups.TryGetValue(data.SlotGroup, out var slotGroup))
+            return;
+
+        slotGroup.RemoveButton(data.SlotName);
+    }
+
+    private void LoadSlots(ClientInventoryComponent clientInv)
+    {
+        UnloadSlots();
+        _playerInventory = clientInv;
+        foreach (var slotData in clientInv.SlotData.Values)
+        {
+            AddSlot(slotData);
+        }
+
+        UpdateInventoryHotbar(_playerInventory);
+    }
+
+    private void UnloadSlots()
+    {
+        _playerInventory = null;
+        foreach (var slotGroup in _slotGroups.Values)
+        {
+            slotGroup.ClearButtons();
+        }
+    }
+
+    private void SpriteUpdated(SlotSpriteUpdate update)
+    {
+        var (group, name, sprite, showStorage) = update;
+
+        if (_strippingWindow?.InventoryButtons.GetButton(update.Name) is { } inventoryButton)
+        {
+            inventoryButton.SpriteView.Sprite = sprite;
+            inventoryButton.StorageButton.Visible = showStorage;
+        }
+
+        if (_slotGroups.GetValueOrDefault(group)?.GetButton(name) is not { } button)
+            return;
+
+        button.SpriteView.Sprite = sprite;
+        button.StorageButton.Visible = showStorage;
+    }
+
+    public bool RegisterSlotGroupContainer(ItemSlotButtonContainer slotContainer)
+    {
+        if (_slotGroups.TryAdd(slotContainer.SlotGroup, slotContainer))
+            return true;
+
+        Logger.Warning("Could not add container for slotgroup: " + slotContainer.SlotGroup);
+        return false;
+    }
+
+    public void RemoveSlotGroup(string slotGroupName)
+    {
+        _slotGroups.Remove(slotGroupName);
+    }
+}

Content.Client/UserInterface/Systems/Inventory/Windows/StrippingWindow.xaml

@@ -0,0 +1,11 @@
+<windows:StrippingWindow
+    xmlns="https://spacestation14.io"
+    xmlns:windows="clr-namespace:Content.Client.UserInterface.Systems.Inventory.Windows"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Inventory.Controls"
+    Name="StrippingDisplay"
+    HorizontalExpand="True"
+    Title="Stripping"
+    VerticalExpand="True"
+>
+    <controls:InventoryDisplay Name="InventoryButtons" Access="Public"/>
+</windows:StrippingWindow>

Content.Client/UserInterface/Systems/Inventory/Windows/StrippingWindow.xaml.cs

@@ -0,0 +1,15 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Windows;
+
+[GenerateTypedNameReferences]
+public sealed partial class StrippingWindow : UserInterface.Controls.FancyWindow
+{
+    public StrippingWindow()
+    {
+        RobustXamlLoader.Load(this);
+        LayoutContainer.SetAnchorAndMarginPreset(this, LayoutContainer.LayoutPreset.Center);
+    }
+}

Content.Client/UserInterface/Systems/MenuBar/Widgets/GameTopMenuBar.xaml

@@ -0,0 +1,88 @@
+<widgets:GameTopMenuBar xmlns="https://spacestation14.io"
+           xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+           xmlns:style="clr-namespace:Content.Client.Stylesheets"
+           xmlns:ic="clr-namespace:Robust.Shared.Input;assembly=Robust.Shared"
+           xmlns:is="clr-namespace:Content.Shared.Input;assembly=Content.Shared"
+           xmlns:xe="clr-namespace:Content.Client.UserInterface.XamlExtensions"
+           xmlns:ui="clr-namespace:Content.Client.UserInterface.Controls"
+           xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.MenuBar.Widgets"
+           Name = "MenuButtons"
+           VerticalExpand="False"
+           Orientation="Horizontal"
+           HorizontalAlignment="Left"
+           VerticalAlignment="Top"
+           SeparationOverride="5"
+>
+    <ui:MenuButton
+        Name="EscapeButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/hamburger.svg.192dpi.png'}"
+        BoundKey = "{x:Static ic:EngineKeyFunctions.EscapeMenu}"
+        ToolTip="{Loc 'game-hud-open-escape-menu-button-tooltip'}"
+        MinSize="70 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonOpenRight}"
+        />
+    <ui:MenuButton
+        Name="CharacterButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/character.svg.192dpi.png'}"
+        ToolTip="{Loc 'game-hud-open-character-menu-button-tooltip'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenCharacterMenu}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="InventoryButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/inventory.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenInventoryMenu}"
+        ToolTip="{Loc 'game-hud-open-inventory-menu-button-tooltip'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="CraftingButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/hammer.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenCraftingMenu}"
+        ToolTip="{Loc 'game-hud-open-crafting-menu-button-tooltip'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="ActionButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/fist.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenActionsMenu}"
+        ToolTip="{Loc 'game-hud-open-actions-menu-button-tooltip'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="AdminButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/gavel.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenAdminMenu}"
+        ToolTip="{Loc 'game-hud-open-admin-menu-button-tooltip'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="SandboxButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/sandbox.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenSandboxWindow}"
+        ToolTip="{Loc 'game-hud-open-sandbox-menu-button-tooltip'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonSquare}"
+        />
+    <ui:MenuButton
+        Name="AHelpButton"
+        Access="Internal"
+        Icon="{xe:Tex '/Textures/Interface/info.svg.192dpi.png'}"
+        BoundKey = "{x:Static is:ContentKeyFunctions.OpenAHelp}"
+        ToolTip="{Loc 'ui-options-function-open-ahelp'}"
+        MinSize="42 64"
+        AppendStyleClass="{x:Static style:StyleBase.ButtonOpenLeft}"
+        />
+</widgets:GameTopMenuBar>

Content.Client/UserInterface/Systems/MenuBar/Widgets/GameTopMenuBar.xaml.cs

@@ -0,0 +1,15 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.MenuBar.Widgets
+{
+    [GenerateTypedNameReferences]
+    public sealed partial class GameTopMenuBar : UIWidget
+    {
+        public GameTopMenuBar()
+        {
+            RobustXamlLoader.Load(this);
+        }
+    }
+}

Content.Client/UserInterface/Systems/Objectives/Controls/ObjectiveBriefingControl.xaml

@@ -0,0 +1,7 @@
+<controls:ObjectiveBriefingControl
+    xmlns="https://spacestation14.io"
+    xmlns:cc="clr-namespace:Content.Client.UserInterface.Controls"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Objectives.Controls"
+    Orientation="Horizontal">
+    <Label Name="Label" Access="Public" Modulate="#FFFF00"/>
+</controls:ObjectiveBriefingControl>

Content.Client/UserInterface/Systems/Objectives/Controls/ObjectiveBriefingControl.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Objectives.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ObjectiveBriefingControl : BoxContainer
+{
+    public ObjectiveBriefingControl()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Objectives/Controls/ObjectiveConditionsControl.xaml

@@ -0,0 +1,12 @@
+<controls:ObjectiveConditionsControl
+    xmlns="https://spacestation14.io"
+    xmlns:cc="clr-namespace:Content.Client.UserInterface.Controls"
+    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Objectives.Controls"
+    Orientation="Horizontal">
+    <cc:ProgressTextureRect Name="ProgressTexture" VerticalAlignment="Center" Access="Public"/>
+    <Control MinSize="10 0"/>
+    <BoxContainer Orientation="Vertical">
+        <Label Name="Title" Access="Public"/>
+        <Label Name="Description" Access="Public"/>
+    </BoxContainer>
+</controls:ObjectiveConditionsControl>

Content.Client/UserInterface/Systems/Objectives/Controls/ObjectiveConditionsControl.xaml.cs

@@ -0,0 +1,14 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Systems.Objectives.Controls;
+
+[GenerateTypedNameReferences]
+public sealed partial class ObjectiveConditionsControl : BoxContainer
+{
+    public ObjectiveConditionsControl()
+    {
+        RobustXamlLoader.Load(this);
+    }
+}

Content.Client/UserInterface/Systems/Sandbox/SandboxUIController.cs

@@ -1,8 +1,8 @@
 using Content.Client.Gameplay;
-using Content.Client.HUD;
 using Content.Client.Markers;
 using Content.Client.Sandbox;
 using Content.Client.SubFloor;
+using Content.Client.UserInterface.Controls;
 using Content.Client.UserInterface.Systems.DecalPlacer;
 using Content.Client.UserInterface.Systems.Sandbox.Windows;
 using Content.Shared.Input;
@@ -13,11 +13,11 @@ using Robust.Client.Input;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controllers;
 using Robust.Client.UserInterface.Controllers.Implementations;
-using Robust.Client.UserInterface.Controls;
 using Robust.Shared.Input.Binding;
 using Robust.Shared.Map;
 using Robust.Shared.Players;
 using Robust.Shared.Utility;
+using static Robust.Client.UserInterface.Controls.BaseButton;
 
 namespace Content.Client.UserInterface.Systems.Sandbox;
 
@@ -28,7 +28,6 @@ public sealed class SandboxUIController : UIController, IOnStateChanged<Gameplay
     [Dependency] private readonly IEyeManager _eye = default!;
     [Dependency] private readonly IInputManager _input = default!;
     [Dependency] private readonly ILightManager _light = default!;
-    [Dependency] private readonly IGameHud _gameHud = default!;
 
     [UISystemDependency] private readonly DebugPhysicsSystem _debugPhysics = default!;
     [UISystemDependency] private readonly MarkerSystem _marker = default!;
@@ -42,11 +41,14 @@ public sealed class SandboxUIController : UIController, IOnStateChanged<Gameplay
     private TileSpawningUIController TileSpawningController => UIManager.GetUIController<TileSpawningUIController>();
     private DecalPlacerUIController DecalPlacerController => UIManager.GetUIController<DecalPlacerUIController>();
 
+    private MenuButton? _sandboxButton;
+
     public void OnStateEntered(GameplayState state)
     {
         DebugTools.Assert(_window == null);
+        _sandboxButton = UIManager.GetActiveUIWidget<MenuBar.Widgets.GameTopMenuBar>().SandboxButton;
+        _sandboxButton.OnPressed += SandboxButtonPressed;
         EnsureWindow();
-        _gameHud.SandboxButtonToggled += GameHudOnSandboxButtonToggled;
 
         _input.SetInputCommand(ContentKeyFunctions.OpenEntitySpawnWindow,
             InputCmdHandler.FromDelegate(_ => EntitySpawningController.ToggleWindow()));
@@ -67,8 +69,8 @@ public sealed class SandboxUIController : UIController, IOnStateChanged<Gameplay
         if(_window is { Disposed: false })
             return;
         _window = UIManager.CreateWindow<SandboxWindow>();
-        _window.OnClose += () => { _gameHud.SandboxButtonDown = false; };
-        _window.OnOpen += () => { _gameHud.SandboxButtonDown = true; };
+        _window.OnOpen += () => { _sandboxButton!.Pressed = true; };
+        _window.OnClose += () => { _sandboxButton!.Pressed = false; };
         _window.ToggleLightButton.Pressed = !_light.Enabled;
         _window.ToggleFovButton.Pressed = !_eye.CurrentEye.DrawFov;
         _window.ToggleShadowsButton.Pressed = !_light.DrawShadows;
@@ -105,8 +107,12 @@ public sealed class SandboxUIController : UIController, IOnStateChanged<Gameplay
             _window = null;
         }
 
-        _gameHud.SandboxButtonToggled -= GameHudOnSandboxButtonToggled;
-        _gameHud.SandboxButtonDown = false;
+        if (_sandboxButton != null)
+        {
+            _sandboxButton.Pressed = false;
+            _sandboxButton.OnPressed -= SandboxButtonPressed;
+            _sandboxButton = null;
+        }
 
         CommandBinds.Unregister<SandboxSystem>();
     }
@@ -121,6 +127,11 @@ public sealed class SandboxUIController : UIController, IOnStateChanged<Gameplay
         system.SandboxDisabled -= CloseAll;
     }
 
+    private void SandboxButtonPressed(ButtonEventArgs args)
+    {
+        ToggleWindow();
+    }
+
     private void CloseAll()
     {
         _window?.Close();

Content.Client/UserInterface/XamlExtensions/TextureExtension.cs

@@ -0,0 +1,24 @@
+using Content.Client.Resources;
+using JetBrains.Annotations;
+using Robust.Client.ResourceManagement;
+
+namespace Content.Client.UserInterface.XamlExtensions;
+
+
+[PublicAPI]
+public sealed class TexExtension
+{
+    private IResourceCache _resourceCache;
+    public string Path { get; }
+
+    public TexExtension(string path)
+    {
+        _resourceCache = IoCManager.Resolve<IResourceCache>();
+        Path = path;
+    }
+
+    public object ProvideValue()
+    {
+        return _resourceCache.GetTexture(Path);
+    }
+}