Drop the ControlGroupModifier setting. Use Cmd on osx for group addition.

OpenRA.Game/GameRules/Settings.cs

@@ -102,11 +102,6 @@ namespace OpenRA.GameRules
 		public int SheetSize = 2048;
 	}
 		
-	public class KeyboardSettings
-	{
-		public Modifiers ControlGroupModifier = Modifiers.Ctrl;
-	}
-	
 	public class Settings
 	{
 		string SettingsFile;
@@ -117,7 +112,6 @@ namespace OpenRA.GameRules
 		public GraphicSettings Graphics = new GraphicSettings();
 		public ServerSettings Server = new ServerSettings();
 		public DebugSettings Debug = new DebugSettings();
-		public KeyboardSettings Keyboard = new KeyboardSettings();
 		public Dictionary<string, object> Sections;
 		public Settings(string file, Arguments args)
 		{			
@@ -130,7 +124,6 @@ namespace OpenRA.GameRules
 				{"Graphics", Graphics},
 				{"Server", Server},
 				{"Debug", Debug},
-				{"Keyboard",Keyboard}
 			};
 			
 			

OpenRA.Game/Selection.cs

@@ -66,7 +66,8 @@ namespace OpenRA
 
 		public void DoControlGroup(World world, int group, Modifiers mods)
 		{
-			if (mods.HasModifier(Game.Settings.Keyboard.ControlGroupModifier))
+			var addModifier = Platform.CurrentPlatform == PlatformType.OSX ? Modifiers.Meta : Modifiers.Ctrl;
+			if (mods.HasModifier(addModifier))
 			{
 				if (actors.Count == 0)
 					return;

OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs

@@ -51,7 +51,6 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 			var debugSettings = Game.Settings.Debug;
 			var graphicsSettings = Game.Settings.Graphics;
 			var soundSettings = Game.Settings.Sound;
-			var keyboardSettings = Game.Settings.Keyboard;
 			
 			// Player profile
 			var nameTextfield = generalPane.GetWidget<TextFieldWidget>("NAME_TEXTFIELD");
@@ -136,11 +135,6 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 			teamchatCheckbox.IsChecked = () => gameSettings.TeamChatToggle;
 			teamchatCheckbox.OnClick = () => gameSettings.TeamChatToggle ^= true;
 			
-			var groupModifierDropdown = inputPane.GetWidget<DropDownButtonWidget>("GROUPADD_MODIFIER");
-			groupModifierDropdown.OnMouseDown = _ => ShowGroupModifierDropdown(groupModifierDropdown, keyboardSettings);
-			groupModifierDropdown.GetText = () => keyboardSettings.ControlGroupModifier.ToString();
-			
-			
 			panel.GetWidget<ButtonWidget>("BACK_BUTTON").OnClick = () =>
 			{
 				playerSettings.Name = nameTextfield.Text;
@@ -178,30 +172,6 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 			return true;
 		}
 		
-		bool ShowGroupModifierDropdown(DropDownButtonWidget dropdown, KeyboardSettings s)
-		{
-			var options = new Dictionary<string, Modifiers>()
-			{
-				{ "Ctrl", Modifiers.Ctrl },
-				{ "Alt", Modifiers.Alt },
-				{ "Shift", Modifiers.Shift },
-				// TODO: Display this as Cmd on osx once we have platform detection
-				{ "Meta", Modifiers.Meta }
-			};
-			
-			Func<string, ScrollItemWidget, ScrollItemWidget> setupItem = (o, itemTemplate) =>
-			{
-				var item = ScrollItemWidget.Setup(itemTemplate,
-				                                  () => s.ControlGroupModifier == options[o],
-				                                  () => s.ControlGroupModifier = options[o]);
-				item.GetWidget<LabelWidget>("LABEL").GetText = () => o;
-				return item;
-			};
-			
-			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, options.Keys.ToList(), setupItem);
-			return true;
-		}
-		
 		bool ShowWindowModeDropdown(DropDownButtonWidget dropdown, GraphicSettings s)
 		{
 			var options = new Dictionary<string, WindowMode>()

mods/cnc/chrome/preferences.yaml

@@ -295,21 +295,6 @@ Container@SETTINGS_PANEL:
 					Height:20
 					Font:Regular
 					Text:Shift-Enter Toggles Team Chat
-				Label@GROUP_MODIFIER_LABEL:
-					X:375
-					Y:65
-					Width:160
-					Height:20
-					Font:Regular
-					Text:Group Addition Modifier:
-					Align:Right
-				DropDownButton@GROUPADD_MODIFIER:
-					Id:GROUPADD_MODIFIER
-					X:540
-					Y:65
-					Width:100
-					Height:25
-					Font:Regular
 #				Label@BINDING_LABEL:
 #					Font:Bold
 #					X:375