Split the last TD UI logic into reuseable chunks.

OpenRA.Mods.RA/Widgets/Logic/Ingame/IngamePowerCounterLogic.cs

@@ -0,0 +1,27 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Mods.RA.Buildings;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.RA.Widgets.Logic
+{
+	public class IngamePowerCounterLogic
+	{
+		[ObjectCreator.UseCtor]
+		public IngamePowerCounterLogic(Widget widget, World world)
+		{
+			var powerManager = world.LocalPlayer.PlayerActor.Trait<PowerManager>();
+			var power = widget.Get<LabelWidget>("POWER");
+
+			power.GetText = () => powerManager.PowerProvided == 1000000 ? "inf" : powerManager.ExcessPower.ToString();
+		}
+	}
+}