big transformation , using DockPanels now

it feels good to me!
-Thoys

git-svn-id: https://lsleditor.svn.sourceforge.net/svnroot/lsleditor@26 3f4676ac-adda-40fd-8265-58d1435b1672

trunk/Docking/DockPaneCollection.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace LSLEditor.Docking
+{
+	public class DockPaneCollection : ReadOnlyCollection<DockPane>
+	{
+        internal DockPaneCollection()
+            : base(new List<DockPane>())
+        {
+        }
+
+		internal int Add(DockPane pane)
+		{
+			if (Items.Contains(pane))
+				return Items.IndexOf(pane);
+
+			Items.Add(pane);
+            return Count - 1;
+		}
+
+		internal void AddAt(DockPane pane, int index)
+		{
+			if (index < 0 || index > Items.Count - 1)
+				return;
+			
+			if (Contains(pane))
+				return;
+
+			Items.Insert(index, pane);
+		}
+
+		internal void Dispose()
+		{
+			for (int i=Count - 1; i>=0; i--)
+				this[i].Close();
+		}
+
+		internal void Remove(DockPane pane)
+		{
+			Items.Remove(pane);
+		}
+	}
+}