Add a base single-hotkey logic class to avoid future duplication.

OpenRA.Mods.Common/OpenRA.Mods.Common.csproj

@@ -821,6 +821,7 @@
     <Compile Include="Traits\Render\ReloadArmamentsBar.cs" />
     <Compile Include="Lint\CheckChromeHotkeys.cs" />
     <Compile Include="UtilityCommands\LintInterfaces.cs" />
+    <Compile Include="Widgets\Logic\SingleHotkeyBaseLogic.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="AfterBuild">

OpenRA.Mods.Common/Widgets/Logic/SingleHotkeyBaseLogic.cs

@@ -0,0 +1,45 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Mods.Common.Lint;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets.Logic
+{
+	public abstract class SingleHotkeyBaseLogic : ChromeLogic
+	{
+		protected SingleHotkeyBaseLogic(Widget widget, string argName, string parentName, Dictionary<string, MiniYaml> logicArgs)
+		{
+			var ks = Game.Settings.Keys;
+			MiniYaml yaml;
+
+			var namedKey = new NamedHotkey();
+			if (logicArgs.TryGetValue(argName, out yaml))
+				namedKey = new NamedHotkey(yaml.Value, ks);
+
+			var keyhandler = widget.Get<LogicKeyListenerWidget>(parentName);
+			keyhandler.AddHandler(e =>
+			{
+				if (e.Event == KeyInputEvent.Down)
+				{
+					var key = Hotkey.FromKeyInput(e);
+					if (key == namedKey.GetValue())
+						return OnHotkeyActivated(e);
+				}
+
+				return false;
+			});
+		}
+
+		protected abstract bool OnHotkeyActivated(KeyInput e);
+	}
+}