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89 lines
2.8 KiB
C#
89 lines
2.8 KiB
C#
// Gst.GLib.ObjectManager.cs - Gst.GLib ObjectManager class implementation
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright <c> 2001-2002 Mike Kestner
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// Copyright <c> 2004-2005 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace Gst.GLib {
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using System;
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using System.Runtime.InteropServices;
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using System.Reflection;
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public class ObjectManager {
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static BindingFlags flags = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.CreateInstance;
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public static Gst.GLib.Object CreateObject (IntPtr raw)
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{
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if (raw == IntPtr.Zero)
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return null;
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Type type = GetTypeOrParent (raw);
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if (type == null)
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return null;
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Gst.GLib.Object obj;
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try {
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obj = Activator.CreateInstance (type, flags, null, new object[] {raw}, null) as Gst.GLib.Object;
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} catch (MissingMethodException) {
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throw new Gst.GLib.MissingIntPtrCtorException ("Gst.GLib.Object subclass " + type + " must provide a protected or public IntPtr ctor to support wrapping of native object handles.");
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}
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return obj;
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}
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[Obsolete ("Replaced by GType.Register (GType, Type)")]
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public static void RegisterType (string native_name, string managed_name, string assembly)
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{
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RegisterType (native_name, managed_name + "," + assembly);
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}
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[Obsolete ("Replaced by GType.Register (GType, Type)")]
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public static void RegisterType (string native_name, string mangled)
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{
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RegisterType (GType.FromName (native_name), Type.GetType (mangled));
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}
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[Obsolete ("Replaced by GType.Register (GType, Type)")]
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public static void RegisterType (GType native_type, System.Type type)
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{
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GType.Register (native_type, type);
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}
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static Type GetTypeOrParent (IntPtr obj)
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{
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IntPtr typeid = GType.ValFromInstancePtr (obj);
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if (typeid == GType.Invalid.Val)
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return null;
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Type result = GType.LookupType (typeid);
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while (result == null) {
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typeid = g_type_parent (typeid);
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if (typeid == IntPtr.Zero)
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return null;
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result = GType.LookupType (typeid);
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}
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return result;
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_type_parent (IntPtr typ);
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}
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}
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