Unify ra and cnc main menu logic and clean up the main menus.

Move a bunch of buttons into an Extras submenu and the server browser.
Move CncMenuPaletteEffect to ra so it can be used elsewhere and rename it to MenuPaletteEffect.

OpenRA.Mods.RA/Widgets/Logic/MainMenuLogic.cs

@@ -0,0 +1,143 @@
+#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 System.Net;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.RA.Widgets.Logic
+{
+	public class MainMenuLogic
+	{
+		protected enum MenuType { Main, Extras, None }
+
+		protected MenuType menuType = MenuType.Main;
+		Widget rootMenu;
+
+		[ObjectCreator.UseCtor]
+		public MainMenuLogic(Widget widget, World world)
+		{
+			rootMenu = widget;
+			rootMenu.Get<LabelWidget>("VERSION_LABEL").Text = Game.modData.Manifest.Mod.Version;
+
+			// Menu buttons
+			var mainMenu = widget.Get("MAIN_MENU");
+			mainMenu.IsVisible = () => menuType == MenuType.Main;
+
+			mainMenu.Get<ButtonWidget>("SINGLEPLAYER_BUTTON").OnClick = StartSkirmishGame;
+
+			mainMenu.Get<ButtonWidget>("MULTIPLAYER_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Ui.OpenWindow("SERVERBROWSER_PANEL", new WidgetArgs
+				{
+					{ "onStart", RemoveShellmapUI },
+					{ "onExit", () => menuType = MenuType.Main }
+				});
+			};
+
+			mainMenu.Get<ButtonWidget>("MODS_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Ui.OpenWindow("MODS_PANEL", new WidgetArgs
+				{
+					{ "onExit", () => menuType = MenuType.Main },
+					{ "onSwitch", RemoveShellmapUI }
+				});
+			};
+
+			mainMenu.Get<ButtonWidget>("SETTINGS_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Game.OpenWindow("SETTINGS_PANEL", new WidgetArgs
+				{
+					{ "onExit", () => menuType = MenuType.Main }
+				});
+			};
+
+			mainMenu.Get<ButtonWidget>("EXTRAS_BUTTON").OnClick = () => menuType = MenuType.Extras;
+
+			mainMenu.Get<ButtonWidget>("QUIT_BUTTON").OnClick = Game.Exit;
+
+			// Extras menu
+			var extrasMenu = widget.Get("EXTRAS_MENU");
+			extrasMenu.IsVisible = () => menuType == MenuType.Extras;
+
+			extrasMenu.Get<ButtonWidget>("REPLAYS_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Ui.OpenWindow("REPLAYBROWSER_PANEL", new WidgetArgs
+				{
+					{ "onExit", () => menuType = MenuType.Extras },
+					{ "onStart", RemoveShellmapUI }
+				});
+			};
+
+			extrasMenu.Get<ButtonWidget>("MUSIC_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Ui.OpenWindow("MUSIC_PANEL", new WidgetArgs
+				{
+					{ "onExit", () => menuType = MenuType.Extras },
+				});
+			};
+
+			var assetBrowserButton = extrasMenu.GetOrNull<ButtonWidget>("ASSETBROWSER_BUTTON");
+			if (assetBrowserButton != null)
+				assetBrowserButton.OnClick = () =>
+				{
+					menuType = MenuType.None;
+					Game.OpenWindow("ASSETBROWSER_PANEL", new WidgetArgs
+					{
+						{ "onExit", () => menuType = MenuType.Extras },
+					});
+				};
+
+			extrasMenu.Get<ButtonWidget>("CREDITS_BUTTON").OnClick = () =>
+			{
+				menuType = MenuType.None;
+				Ui.OpenWindow("CREDITS_PANEL", new WidgetArgs
+				{
+					{ "onExit", () => menuType = MenuType.Extras },
+				});
+			};
+
+			extrasMenu.Get<ButtonWidget>("BACK_BUTTON").OnClick = () => menuType = MenuType.Main;
+		}
+
+		void RemoveShellmapUI()
+		{
+			rootMenu.Parent.RemoveChild(rootMenu);
+		}
+
+		void OpenSkirmishLobbyPanel()
+		{
+			menuType = MenuType.None;
+			Game.OpenWindow("SERVER_LOBBY", new WidgetArgs
+			{
+				{ "onExit", () => { Game.Disconnect(); menuType = MenuType.Main; } },
+				{ "onStart", RemoveShellmapUI },
+				{ "addBots", true }
+			});
+		}
+
+		void StartSkirmishGame()
+		{
+			var map = WidgetUtils.ChooseInitialMap(Game.Settings.Server.Map);
+			Game.Settings.Server.Map = map;
+			Game.Settings.Save();
+
+			ConnectionLogic.Connect(IPAddress.Loopback.ToString(),
+				Game.CreateLocalServer(map),
+				"",
+				OpenSkirmishLobbyPanel,
+				() => { Game.CloseServer(); menuType = MenuType.Main; });
+		}
+	}
+}