From 737717e5a51ba9ce63885127960001ae6b0ebfb6 Mon Sep 17 00:00:00 2001
From: Daniel Kornhauser Eisenberg <dkor@mono-cvs.ximian.com>
Date: Mon, 27 Oct 2003 04:58:42 +0000
Subject: [PATCH] 2003-10-27  Daniel Kornhauser Eisenberg  <dkor@alum.mit.edu>

        * glib/ListBase.cs : Added Indexer to allow [] based adressing
        * glib/List.cs : Added DllImport for Indexer
        * glib/SList.cs : Added DllImport for Indexer

svn path=/trunk/gtk-sharp/; revision=19420
---
 glib/List.cs     |  9 +++++++++
 glib/ListBase.cs | 45 +++++++++++++++++++++++++++++++--------------
 glib/SList.cs    |  9 +++++++++
 3 files changed, 49 insertions(+), 14 deletions(-)

diff --git a/glib/List.cs b/glib/List.cs
index 154dffcfe..7067fb69b 100644
--- a/glib/List.cs
+++ b/glib/List.cs
@@ -76,6 +76,15 @@ namespace GLib {
 			return g_list_prepend (list, raw);
 		}
 
+		[DllImport("libglib-2.0-0.dll")]
+	        static extern IntPtr g_list_nth_data (IntPtr l, uint n);
+
+		internal override IntPtr NthData (uint n)
+		{
+			return g_list_nth_data (Handle, n);
+		}
+
+
 		public List (IntPtr raw) : base (raw)
 		{
 		}
diff --git a/glib/ListBase.cs b/glib/ListBase.cs
index a5bf67b9b..1d1077747 100644
--- a/glib/ListBase.cs
+++ b/glib/ListBase.cs
@@ -25,6 +25,7 @@ namespace GLib {
 		private bool managed = false;
 		protected System.Type element_type = null;
 
+                abstract internal IntPtr NthData (uint index);
 		abstract internal IntPtr GetData (IntPtr current);
 		abstract internal IntPtr Next (IntPtr current);
 		abstract internal int Length (IntPtr list);
@@ -106,6 +107,15 @@ namespace GLib {
 			}
 		}
 
+		public object this [int index] { 
+			get { 
+				IntPtr data = NthData ((uint) index);
+				object ret = null;
+				ret = DataMarshal (data);
+				return ret;
+			}
+		}
+
 		// Synchronization could be tricky here. Hmm.
 		public bool IsSynchronized {
 			get { return false; }
@@ -125,6 +135,26 @@ namespace GLib {
 			orig.CopyTo (array, index); 
 		}
 
+		internal object DataMarshal (IntPtr data) 
+		{
+			object ret = null;
+			if (element_type != null) {
+				if (element_type == typeof (string))
+					ret = Marshal.PtrToStringAnsi (data);
+				else if (element_type == typeof (int))
+					ret = (int) data;
+				else if (element_type.IsValueType)
+					ret = Marshal.PtrToStructure (data, element_type);
+				else
+					ret = Activator.CreateInstance (element_type, new object[] {data});
+
+			} else if (Object.IsObject (data))
+				ret = GLib.Object.GetObject (data, false);
+
+			return ret;
+		}
+
+
 		private class ListEnumerator : IEnumerator
 		{
 			private IntPtr current = IntPtr.Zero;
@@ -139,20 +169,7 @@ namespace GLib {
 				get {
 					IntPtr data = list.GetData (current);
 					object ret = null;
-					if (list.element_type != null)
-					{
-						if (list.element_type == typeof (string))
-							ret = Marshal.PtrToStringAnsi (data);
-						else if (list.element_type == typeof (int))
-							ret = (int) data;
-						else if (list.element_type.IsValueType)
-							ret = Marshal.PtrToStructure (data, list.element_type);
-						else
-							ret = Activator.CreateInstance (list.element_type, new object[] {data});
-					}
-					else if (Object.IsObject (data))
-						ret = GLib.Object.GetObject (data, false);
-
+					ret = list.DataMarshal (data);
 					return ret;
 				}
 			}
diff --git a/glib/SList.cs b/glib/SList.cs
index 460a1adf8..d82f345b4 100644
--- a/glib/SList.cs
+++ b/glib/SList.cs
@@ -76,6 +76,15 @@ namespace GLib {
 			return g_slist_prepend (list, raw);
 		}
 
+
+		[DllImport("libglib-2.0-0.dll")]
+	        static extern IntPtr g_slist_nth_data (IntPtr l, uint n);
+
+		internal override IntPtr NthData (uint n)
+		{
+			return g_slist_nth_data (Handle, n);
+		}
+
 		public SList (IntPtr raw) : base (raw)
 		{
 		}