GtkSharp/glib/ObjectManager.cs
Mike Kestner d4af78e347 2005-03-24 Mike Kestner <mkestner@novell.com>
* generator/CallbackGen.cs : don't create native delegates for nulls.
	* generator/ObjectGen.cs : revamp the ObjectManager code.
	* glib/Object.cs : use new ObjectManager.RegisterType overload.
	* glib/ObjectManager.cs : rewrite to kill the lameass LoadWithPartial
	hack and keep a GType to Type mapping for quicker lookup/activation.

svn path=/trunk/gtk-sharp/; revision=42241
2005-03-24 22:47:50 +00:00

129 lines
3.7 KiB
C#

// GLib.ObjectManager.cs - GLib ObjectManager class implementation
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright <c> 2001-2002 Mike Kestner
// Copyright <c> 2004-2005 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GLib {
using System;
using System.Collections;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Text;
public class ObjectManager {
private static Hashtable types = new Hashtable ();
static BindingFlags flags = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.CreateInstance;
public static GLib.Object CreateObject (IntPtr raw)
{
if (raw == IntPtr.Zero)
return null;
Type type = GetTypeOrParent (raw);
if (type == null)
return null;
GLib.Object obj;
try {
obj = Activator.CreateInstance (type, flags, null, new object[] {raw}, null) as GLib.Object;
} catch (MissingMethodException) {
throw new GLib.MissingIntPtrCtorException ("GLib.Object subclass " + type + " must provide a protected or public IntPtr ctor to support wrapping of native object handles.");
}
return obj;
}
[Obsolete ("Use the (GType, Type) overload instead")]
public static void RegisterType (string native_name, string managed_name, string assembly)
{
RegisterType (native_name, managed_name + "," + assembly);
}
[Obsolete ("Use the (GType, Type) overload instead")]
public static void RegisterType (string native_name, string mangled)
{
types [native_name] = mangled;
}
public static void RegisterType (GType native_type, System.Type type)
{
types [native_type.Val] = type;
}
static string GetQualifiedName (string cname)
{
for (int i = 1; i < cname.Length; i++) {
if (Char.IsUpper (cname[i])) {
if (i == 1 && cname [0] == 'G')
return "GLib." + cname.Substring (1);
else
return cname.Substring (0, i) + "." + cname.Substring (i);
}
}
throw new ArgumentException ("cname is not in NamespaceType format. RegisterType should be called directly for " + cname);
}
static Type GetTypeOrParent (IntPtr obj)
{
IntPtr typeid = gtksharp_get_type_id (obj);
Type result = LookupType (typeid);
while (result == null) {
typeid = gtksharp_get_parent_type (typeid);
if (typeid == IntPtr.Zero)
return null;
result = LookupType (typeid);
}
return result;
}
static Type LookupType (IntPtr typeid)
{
if (types.Contains (typeid))
return types [typeid] as Type;
string native_name = Marshaller.Utf8PtrToString (gtksharp_get_type_name_for_id (typeid));
string type_name = GetQualifiedName (native_name);
Type result = null;
foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies ()) {
result = asm.GetType (type_name);
if (result != null)
break;
}
types [typeid] = result;
return result;
}
[DllImport("glibsharpglue-2")]
static extern IntPtr gtksharp_get_type_id (IntPtr raw);
[DllImport("glibsharpglue-2")]
static extern IntPtr gtksharp_get_parent_type (IntPtr typ);
[DllImport("glibsharpglue-2")]
static extern IntPtr gtksharp_get_type_name_for_id (IntPtr typ);
}
}