You feel a tiny prick (Hypospray) (#3034)

Content.Client/GameObjects/Components/Chemistry/HyposprayComponent.cs

@@ -0,0 +1,68 @@
+using Content.Client.UserInterface.Stylesheets;
+using Content.Client.Utility;
+using Content.Shared.Chemistry;
+using Content.Shared.GameObjects.Components.Chemistry;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Localization;
+using Robust.Shared.Timing;
+using Robust.Shared.ViewVariables;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Chemistry
+{
+    [RegisterComponent]
+    public sealed class HyposprayComponent : SharedHyposprayComponent, IItemStatus
+    {
+        [ViewVariables] private ReagentUnit CurrentVolume { get; set; }
+        [ViewVariables] private ReagentUnit TotalVolume { get; set; }
+        [ViewVariables(VVAccess.ReadWrite)] private bool _uiUpdateNeeded;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (curState is not HyposprayComponentState cState)
+                return;
+
+            CurrentVolume = cState.CurVolume;
+            TotalVolume = cState.MaxVolume;
+            _uiUpdateNeeded = true;
+        }
+
+        Control IItemStatus.MakeControl()
+        {
+            return new StatusControl(this);
+        }
+
+        private sealed class StatusControl : Control
+        {
+            private readonly HyposprayComponent _parent;
+            private readonly RichTextLabel _label;
+
+            public StatusControl(HyposprayComponent parent)
+            {
+                _parent = parent;
+                _label = new RichTextLabel {StyleClasses = {StyleNano.StyleClassItemStatus}};
+                AddChild(_label);
+
+                parent._uiUpdateNeeded = true;
+            }
+
+            protected override void Update(FrameEventArgs args)
+            {
+                base.Update(args);
+                if (!_parent._uiUpdateNeeded)
+                {
+                    return;
+                }
+
+                _parent._uiUpdateNeeded = false;
+
+                _label.SetMarkup(Loc.GetString(
+                    "Volume: [color=white]{0}/{1}[/color]",
+                    _parent.CurrentVolume, _parent.TotalVolume));
+            }
+        }
+    }
+}