Bring Windows launcher into line with pchote's ideas.

OpenRA.Launcher/JSBridge.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.IO;
+using System.Diagnostics;
+
+namespace OpenRA.Launcher
+{
+	public class JSBridge
+	{
+		Dictionary<string, Mod> allMods;
+
+		public JSBridge(Dictionary<string, Mod> allMods)
+		{
+			this.allMods = allMods;
+		}
+
+		public bool fileExistsInMod(string file, string mod)
+		{
+			return File.Exists(string.Format("mods{0}{1}{0}{2}", Path.DirectorySeparatorChar, mod, file));
+		}
+
+		public void log(string message)
+		{
+			Console.WriteLine("js: " + message);
+		}
+
+		public void launchMod(string mod)
+		{
+			string m = mod;
+			List<string> modList = new List<string>();
+			modList.Add(m);
+			if (!allMods.ContainsKey(m)) System.Windows.Forms.MessageBox.Show("allMods does not contain " + m);
+			while (!string.IsNullOrEmpty(allMods[m].Requires))
+			{
+				m = allMods[m].Requires;
+				modList.Add(m);
+			}
+
+			Process p = new Process();
+			p.StartInfo.FileName = "OpenRA.Game.exe";
+			p.StartInfo.Arguments = "Game.Mods=" + string.Join(",", modList.ToArray());
+			p.Start();
+		}
+	}
+}