Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Widgets/Logic/Editor/MapEditorTabsLogic.cs

@@ -0,0 +1,100 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * 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;
+using System.Linq;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets.Logic
+{
+	public class MapEditorTabsLogic : ChromeLogic
+	{
+		enum MenuType { Select, Tiles, Layers, Actors, Tools, History }
+
+		readonly World world;
+		readonly Widget panelContainer;
+		readonly Widget tabContainer;
+		readonly EditorViewportControllerWidget editor;
+
+		MenuType menuType = MenuType.Tiles;
+		MenuType lastSelectedTab = MenuType.Tiles;
+
+		public static event Action OnTabChanged;
+
+		[ObjectCreator.UseCtor]
+		public MapEditorTabsLogic(Widget widget, World world)
+		{
+			this.world = world;
+			panelContainer = widget.Parent;
+			tabContainer = widget.Get("MAP_EDITOR_TAB_CONTAINER");
+
+			editor = widget.Parent.Parent.Get<EditorViewportControllerWidget>("MAP_EDITOR");
+			editor.DefaultBrush.UpdateSelectedTab += HandleUpdateSelectedTab;
+
+			SetupTab("SELECT_TAB", "SELECT_WIDGETS", MenuType.Select);
+			SetupTab("TILES_TAB", "TILE_WIDGETS", MenuType.Tiles);
+			SetupTab("OVERLAYS_TAB", "LAYER_WIDGETS", MenuType.Layers);
+			SetupTab("ACTORS_TAB", "ACTOR_WIDGETS", MenuType.Actors);
+			SetupTab("TOOLS_TAB", "TOOLS_WIDGETS", MenuType.Tools);
+			SetupTab("HISTORY_TAB", "HISTORY_WIDGETS", MenuType.History);
+		}
+
+		protected override void Dispose(bool disposing)
+		{
+			editor.DefaultBrush.UpdateSelectedTab -= HandleUpdateSelectedTab;
+
+			base.Dispose(disposing);
+		}
+
+		void SetupTab(string buttonId, string tabId, MenuType tabType)
+		{
+			var tab = tabContainer.Get<ButtonWidget>(buttonId);
+			tab.IsHighlighted = () => menuType == tabType;
+			tab.OnClick = () =>
+			{
+				if (tabType != MenuType.Select)
+					lastSelectedTab = tabType;
+
+				menuType = tabType;
+				OnTabChanged?.Invoke();
+
+				// Clear keyboard focus when switching tabs.
+				Ui.KeyboardFocusWidget = null;
+			};
+
+			// Selection tab is special, it can only be selected if a selection exists.
+			if (tabType == MenuType.Select)
+				tab.IsDisabled = () => !editor.DefaultBrush.Selection.HasSelection;
+
+			if (tabType == MenuType.Tools)
+			{
+				var toolsAvailable = world.WorldActor.TraitsImplementing<IEditorTool>().Any();
+				tab.IsDisabled = () => !toolsAvailable;
+			}
+
+			var container = panelContainer.Get<ContainerWidget>(tabId);
+			container.IsVisible = () => menuType == tabType;
+		}
+
+		void HandleUpdateSelectedTab()
+		{
+			var hasSelection = editor.DefaultBrush.Selection.HasSelection;
+
+			if (menuType != MenuType.Select && hasSelection)
+				menuType = MenuType.Select;
+			else if (menuType == MenuType.Select && !hasSelection)
+				menuType = lastSelectedTab;
+
+			OnTabChanged?.Invoke();
+		}
+	}
+}