Widgets loaded using reflection; draws a non-interactable main-menu

OpenRA.Game/Chrome/WidgetLoader.cs

@@ -0,0 +1,67 @@
+using OpenRA.FileFormats;
+using OpenRA.Graphics;
+using OpenRA.Widgets;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Reflection;
+
+namespace OpenRA
+{
+	class WidgetLoader
+	{
+		static Pair<Assembly, string>[] ModAssemblies;
+		public static void LoadModAssemblies(Manifest m)
+		{
+			var asms = new List<Pair<Assembly, string>>();
+
+			// all the core stuff is in this assembly
+			asms.Add(Pair.New(typeof(Widget).Assembly, typeof(Widget).Namespace));
+
+			// add the mods
+			foreach (var a in m.Assemblies)
+				asms.Add(Pair.New(Assembly.LoadFile(Path.GetFullPath(a)), Path.GetFileNameWithoutExtension(a)));
+			ModAssemblies = asms.ToArray();
+		}
+		
+		public static Widget LoadWidget( MiniYaml node )
+		{
+			var widget = NewWidget( node.Value );
+			foreach( var child in node.Nodes )
+			{
+				if( child.Key == "Children" )
+				{
+					foreach( var c in child.Value.Nodes )
+					{
+						// Hack around a bug in MiniYaml
+						c.Value.Value = c.Key;
+						widget.Children.Add( LoadWidget( c.Value ) );
+					}
+				}
+				else
+					FieldLoader.LoadField( widget, child.Key, child.Value );
+			}
+	
+			return widget;
+		}
+	
+		static Widget NewWidget( string widgetType )
+		{
+			if( widgetType.Contains( "@" ) )
+				widgetType = widgetType.Substring( 0, widgetType.IndexOf( "@" ) );
+			
+			foreach (var mod in ModAssemblies)
+			{
+				var fullTypeName = mod.Second + "." + widgetType + "Widget";
+				var widget = (Widget)mod.First.CreateInstance(fullTypeName);
+				if (widget == null) continue;
+				
+				Log.Write("Creating Widget of type {0}",widgetType);
+				return widget;
+			}
+
+			throw new InvalidOperationException("Cannot locate widget: {0}".F(widgetType));
+		}
+	}
+}