Implement observer shroud selector in C&C.

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

@@ -0,0 +1,65 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using OpenRA.Mods.RA.Buildings;
+using OpenRA.Mods.RA.Orders;
+using OpenRA.Traits;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.RA.Widgets.Logic
+{
+	public class ObserverShroudSelectorLogic
+	{
+		class CameraOption
+		{
+			public string Label;
+			public Func<bool> IsSelected;
+			public Action OnClick;
+
+			public CameraOption(string label, Func<bool> isSelected, Action onClick)
+			{
+				Label = label;
+				IsSelected = isSelected;
+				OnClick = onClick;
+			}
+		}
+
+		[ObjectCreator.UseCtor]
+		public ObserverShroudSelectorLogic(Widget widget, World world)
+		{
+			var views = world.Players.Where(p => !p.NonCombatant).ToDictionary(p => p.PlayerName,
+				p => new CameraOption("{0}'s view".F(p.PlayerName),
+				      () => world.RenderedPlayer == p,
+				      () => { world.RenderedPlayer = p; world.RenderedShroud.Jank(); }
+			));
+			views.Add("", new CameraOption("World view",
+				() => world.RenderedPlayer == null,
+				() => { world.RenderedPlayer = null; world.RenderedShroud.Jank(); }
+			));
+
+			var shroudSelector = widget.Get<DropDownButtonWidget>("SHROUD_SELECTOR");
+			shroudSelector.GetText = () => views[world.RenderedPlayer == null ? "" : world.RenderedPlayer.PlayerName].Label;
+			shroudSelector.OnMouseDown = _ =>
+			{
+				Func<CameraOption, ScrollItemWidget, ScrollItemWidget> setupItem = (option, template) =>
+				{
+					var item = ScrollItemWidget.Setup(template, option.IsSelected, option.OnClick);
+					item.Get<LabelWidget>("LABEL").GetText = () => option.Label;
+					return item;
+				};
+				shroudSelector.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", views.Count() * 30, views.Values, setupItem);
+			};
+		}
+	}
+}