GtkSharp/atk/Object.custom

// Object.custom - Atk Object class customizations
//
// Author: Andres G. Aragoneses <aaragoneses@novell.com>
//
// Copyright (c) 2008 Novell, Inc.
//
// This code is inserted after the automatically generated code.
//
//
// 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.
		
		[DllImport("atksharpglue-2")]
		static extern int atksharp_object_override_get_n_children (IntPtr type, NChildrenDelegate cb);
		
		[GLib.CDeclCallback]
		delegate int NChildrenDelegate (IntPtr raw);
		
		static NChildrenDelegate NChildrenCallback;
		
		static int NChildren_cb (IntPtr raw)
		{
			try {
				Atk.Object obj = GLib.Object.GetObject (raw, false) as Atk.Object;
				return obj.OnGetNChildren();
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}

			return 0;
		}
		
		static void OverrideNChildren (GLib.GType gtype)
		{
			if (NChildrenCallback == null)
				NChildrenCallback = new NChildrenDelegate (NChildren_cb);
			atksharp_object_override_get_n_children (gtype.Val, NChildrenCallback);
		}
		
		[GLib.DefaultSignalHandler (Type=typeof(Atk.Object), ConnectionMethod="OverrideNChildren")]
		protected virtual int OnGetNChildren() {
			return 0;
		}
		
		[DllImport("atksharpglue-2")]
		static extern IntPtr atksharp_object_override_ref_child (IntPtr type, RefChildDelegate cb);
		
		[GLib.CDeclCallback]
		delegate IntPtr RefChildDelegate (IntPtr raw, int i);
		
		static RefChildDelegate RefChildCallback;
		
		[DllImport("libgobject-2.0-0.dll")]
		static extern IntPtr g_object_ref (IntPtr handle);

		static IntPtr RefChild_cb (IntPtr raw, int i)
		{
			try {
				Atk.Object obj = GLib.Object.GetObject (raw, false) as Atk.Object;
				Atk.Object child = obj.OnRefChild (i);
				if (child != null)
					g_object_ref (child.Handle);
				return child == null ? IntPtr.Zero : child.Handle;
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		
			return IntPtr.Zero;
		}
		
		
		static void OverrideRefChild (GLib.GType gtype)
		{
			if (RefChildCallback == null)
				RefChildCallback = new RefChildDelegate (RefChild_cb);
			atksharp_object_override_ref_child (gtype.Val, RefChildCallback);
		}
		
		[GLib.DefaultSignalHandler (Type=typeof(Atk.Object), ConnectionMethod="OverrideRefChild")]
		protected virtual Atk.Object OnRefChild(int i) {
			return null;
		}

		protected void EmitChildrenChanged (ChildrenChangedDetail detail, uint child_index, Atk.Object child)
		{
			GLib.Signal.Emit (this, "children-changed", detail.ToString().ToLower(), child_index, child);
		}
		
		protected enum ChildrenChangedDetail
		{
			Add,
			Remove
		}