extensions/mono/src/components.cs

   1 using System;
   2 using Mozilla.XPCOM;
   3 using System.Reflection;
   4 using System.Reflection.Emit;
   5 using System.Runtime.InteropServices;
   6
   7 namespace Mozilla.XPCOM {
   8
   9 public class Components
  10 {
  11     [DllImport("xpcom-dotnet.so")]
  12     static extern int StartXPCOM(out IntPtr srvmgr);
  13
  14     static IntPtr serviceManager = IntPtr.Zero;
  15
  16     public static IntPtr ServiceManager {
  17         get {
  18             return serviceManager;
  19         }
  20     }
  21
  22     static void RegisterAppDomainHooks()
  23     {
  24         AppDomain.CurrentDomain.TypeResolve +=
  25             new ResolveEventHandler(TypeResolve);
  26         AppDomain.CurrentDomain.AssemblyResolve +=
  27             new ResolveEventHandler(AssemblyResolve);
  28         Console.WriteLine("XPCOM AppDomain hooks registered.");
  29     }
  30
  31     static Assembly AssemblyResolve(object sender, ResolveEventArgs args)
  32     {
  33         Console.WriteLine("Resolving: {0}", args.Name);
  34         return null;
  35     }
  36
  37     public static AssemblyBuilder ProxyAssembly {
  38         get {
  39             return ProxyGenerator.ProxyAssembly;
  40         }
  41     }
  42
  43     static Assembly TypeResolve(object sender, ResolveEventArgs args)
  44     {
  45         if (args.Name.StartsWith("Mozilla.XPCOM.Proxies.")) {
  46             ProxyGenerator gen = new ProxyGenerator(args.Name);
  47             return gen.Generate();
  48         }
  49
  50 #if NOTYET
  51         if (args.Name.StartsWith("Mozilla.XPCOM.Interfaces.")) {
  52             InterfaceGenerator gen = new InterfaceGenerator(args.Name);
  53             return gen.Generate();
  54         }
  55 #endif
  56
  57         return null;
  58     }
  59
  60     public static void Init()
  61     {
  62         if (serviceManager != IntPtr.Zero)
  63             return;
  64
  65         int res = StartXPCOM(out serviceManager);
  66         if (res != 0) {
  67             throw new Exception(String.Format("StartXPCOM failed: {0:X2}",
  68                                               res));
  69         }
  70
  71         RegisterAppDomainHooks();
  72     }
  73
  74     [DllImport("test.so", EntryPoint="GetImpl")]
  75     public static extern IntPtr GetTestImpl();
  76
  77     public static object CreateInstance(string contractId, Type iface)
  78     {
  79         String typeName = iface.FullName;
  80         String proxyName = typeName.Replace(".Interfaces.", ".Proxies.");
  81         Console.WriteLine("Need proxy class {0} for {1}", proxyName, typeName);
  82         Type proxyType = System.Type.GetType(proxyName);
  83         if (contractId == "@off.net/test-component;1") {
  84             ConstructorInfo ctor =
  85                 proxyType.GetConstructor(BindingFlags.NonPublic |
  86                                          BindingFlags.Instance,
  87                                          null, new Type[1] { typeof(IntPtr) },
  88                                          null);
  89             return ctor.Invoke(new object[] { GetTestImpl() });
  90         }
  91         return null;
  92     }
  93 }
  94
  95 }