Item status!

Content.Client/GameObjects/Components/StackComponent.cs

@@ -0,0 +1,60 @@
+using Content.Client.UserInterface;
+using Content.Client.Utility;
+using Content.Shared.GameObjects.Components;
+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;
+
+namespace Content.Client.GameObjects.Components
+{
+    [RegisterComponent]
+    public class StackComponent : SharedStackComponent, IItemStatus
+    {
+        [ViewVariables] public int Count { get; private set; }
+        [ViewVariables] public int MaxCount { get; private set; }
+
+        [ViewVariables(VVAccess.ReadWrite)] private bool _uiUpdateNeeded;
+
+        public Control MakeControl() => new StatusControl(this);
+
+        public override void HandleComponentState(ComponentState curState, ComponentState nextState)
+        {
+            var cast = (StackComponentState) curState;
+
+            Count = cast.Count;
+            MaxCount = cast.MaxCount;
+        }
+
+        private sealed class StatusControl : Control
+        {
+            private readonly StackComponent _parent;
+            private readonly RichTextLabel _label;
+
+            public StatusControl(StackComponent parent)
+            {
+                _parent = parent;
+                _label = new RichTextLabel {StyleClasses = {NanoStyle.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("Count: [color=white]{0}[/color]", _parent.Count));
+            }
+        }
+    }
+}