ObjectManager.cs nuked, Glib.Object now keeps track of the wrapper class, and Gtk.Object should have a better signal handling system.

svn path=/trunk/gtk-sharp/; revision=894

ChangeLog

@@ -1,3 +1,10 @@
+2001-09-20
+
+	* glib/ObjectManager.cs: Nuked.
+	* glib/Object.cs: Keep track of wrapper.
+	* gtk/Object: First stab at better signal system. Should reduce
+	number of pins nessisary.
+
 2001-09-19  Mike Kestner  <mkestner@speakeasy.net>
 
 	* HACKING : New rulez.

glib/Object.cs

@@ -7,25 +7,31 @@
 namespace GLib {
 
 	using System;
+	using System.Collections;
 	using System.ComponentModel;
 	using System.Runtime.InteropServices;
 
 	public class Object  {
-
+		protected static Hashtable Objects = new Hashtable();
-/*
+		protected const String GOBJECTKEY = "gobject#-object";
 		public static Object GetObject(IntPtr o)
 		{
-			if (o == null) throw new ArgumentNullException ();
+			IntPtr key = g_object_get_data (o, GOBJECTKEY);
-			IntPtr obj = g_object_get_data (o, "gobject#-object-manager");
+			Object obj;
-			if (obj == null) return new Object(o);
+			if((int)key != 0)
-			else return ((GCHandle)obj).Target();
+			{
+				obj = (Object)Objects[(int)key];
+				if (obj != null) return obj;
+			}
+			obj = new Object(o); //FIXME: Cast up when we know how.
+			return obj; 
 		}
-                GCHandle gh;
+
 		public Object(IntPtr o)
 		{
-			Object = o;
+			RawObject = o;
 		}
-*/
+
 		private IntPtr _obj;
 
 		protected IntPtr RawObject
@@ -34,6 +40,15 @@ namespace GLib {
 				return _obj;
 			}
 			set {
+				IntPtr key = g_object_get_data (value, GOBJECTKEY);
+				if ((int)key != 0)
+				{
+					Object obj = (Object)Objects[(int)key];
+					if (obj != null) Objects.Remove((int)key);
+				}
+				key = new IntPtr(this.GetHashCode());
+				Objects[(int)key] = this;
+				g_object_set_data (value, GOBJECTKEY, key);
 				_obj = value;
 			}
 		}       
@@ -48,31 +63,31 @@ namespace GLib {
 			}
 		}
 
-/*
+
 		[DllImport("gobject-1.3")]
 		static extern IntPtr g_object_get_data (
-					IntPtr object,
+					IntPtr obj,
 					String key );
+
+		public IntPtr GetRawData (String key)
+		{
+			return g_object_get_data (_obj, key);
+		}
+
 		[DllImport("gobject-1.3")]
 		static extern void g_object_set_data (
-					IntPtr object,
+					IntPtr obj,
 					String key,
 					IntPtr data );
 
-		public IntPtr Data [String key]
+		public void SetRawData (String key, IntPtr value)
 		{
-			get
+			g_object_set_data (_obj, key, value);
-			{
-				return g_object_get_data (Object, key);
-			}
-			set
-			{
-				g_object_set_data (Object, key, value);
-			}
 		}
-		[DllImport("gtk-1.3")]
+
+/*		[DllImport("gtk-1.3")]
 		static extern void g_object_set_data_full (
-					IntPtr object,
+					IntPtr obj,
 					String key,
 					IntPtr data,
 					DestroyNotify destroy );

glib/ObjectManager.cs

@@ -1,35 +0,0 @@
-// ObjectManager.cs - GObject class wrapper helper implementation
-//
-// Author: Bob Smith <bob@thestuff.net>
-//
-// (c) 2001 Bob Smith
-
-namespace GLib {
-
-	using System;
-	using System.Runtime.InteropServices;
-
-/*
-	public class ObjectManager  {
-		public ObjectManager(IntPtr o, Object go)
-		{
-			if (o == null || go -- null) throw new ArgumentNullException ();
-			_gobj = go;
-			_gobj.gh = GCHandle.Alloc (this, GCHandleType.Pinned);
-			Glib.Object.g_object_set_data_full(o, "gobject#-object-manager",
-				gh.AddrOfPinnedObject (), new DestroyNotify(DestroyNotifyEvent));
-
-		}
-		public Glib.Object gobj;
-
-		protected delegate void DestroyNotify (IntPtr data);
-
-		private void DestroyNotifyEvent (IntPtr data)
-		{
-			gobj.gh.Free();
-			_gobj = null;
-		}
-
-	}
-*/
-}

gtk/Object.cs

@@ -12,6 +12,43 @@ namespace Gtk {
 
 	public abstract class Object :  GLib.Object {
 
+		/// <summary>
+		///	Destroy Event
+		/// </summary>
+		///
+		/// <remarks>
+		///	Occurs when the Object is destroyed.
+		/// </remarks>
+
+		private static readonly object DestroyEvent = new object ();
+
+		public event EventHandler Destroy
+		{
+			add
+			{
+                                if (Events[DestroyEvent] == null)
+				{
+					ConnectSignal ("destroy", new SimpleSignal (EmitDestroyEvent));
+				}
+				Events.AddHandler (DeleteEvent, value);
+			}
+                        remove 
+			{
+				Events.RemoveHandler (DeleteEvent, value);
+			}
+		}
+
+		private static void EmitDestroyEvent (IntPtr obj, IntPtr data)
+		{
+			Glib.Object o = Glib.Object.GetObject(obj);
+			EventHandler eh = (EventHandler)(o.Events[DeleteEvent]);
+			if (eh != null)
+			{
+				EventArgs args = new EventArgs ();
+				eh(this, args);
+			}
+		}
+
 		protected delegate void SimpleCallback (IntPtr obj);
 
 		[DllImport("gtk-1.3")]

gtk/SimpleSignal.cs

@@ -0,0 +1,11 @@
+// SimpleSignal.cs - Simple callback delegate.
+//
+// Author: Bob Smith <bob@thestuff.net>
+//
+// (c) 2001 Bob Smith
+
+namespace Gtk {
+	using System;
+
+	public delegate void SimpleSignal (IntPtr obj, IntPtr data);
+}