perf(ui): cache auto-tell tab tint and icon per tab

2026-05-07 22:06:18 +02:00
parent 36b92f0520
commit 1ffc41f97d
4 changed files with 48 additions and 2 deletions
@@ -0,0 +1,36 @@
+namespace HellionChat.Ui;
+
+// Per-Tab cache wrapper around the pure AutoTellTabTint hash helpers.
+// Each cache (tint, icon) carries its own name+world validation key so
+// neither read path mutates the other's state — refilling one never
+// invalidates the other. No string allocation in the steady-state lookup.
+internal static class TabTintCache
+{
+    public static uint GetTint(Tab tab)
+    {
+        var name = tab.TellTarget.Name;
+        var world = tab.TellTarget.World;
+        if (tab._cachedTintTellName != name || tab._cachedTintTellWorld != world)
+        {
+            tab._cachedTintTellName = name;
+            tab._cachedTintTellWorld = world;
+            tab._cachedTellTint = AutoTellTabTint.For(name, world);
+        }
+        return tab._cachedTellTint;
+    }
+
+    public static string GetIcon(Tab tab)
+    {
+        var name = tab.TellTarget.Name;
+        var world = tab.TellTarget.World;
+        if (tab._cachedTellIcon is null
+            || tab._cachedIconTellName != name
+            || tab._cachedIconTellWorld != world)
+        {
+            tab._cachedIconTellName = name;
+            tab._cachedIconTellWorld = world;
+            tab._cachedTellIcon = AutoTellTabTint.IconFor(name, world);
+        }
+        return tab._cachedTellIcon;
+    }
+}