GtkSharp/gtk/TextView.custom

// Gtk.TextView.custom - Gtk TextView class customizations
//
// Author: Mike Kestner <mkestner@ximian.com> 
//
// Copyright (C) 2004 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 ("libgtk-win32-3.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
		static extern IntPtr gtk_text_view_new_with_buffer (IntPtr buffer);

		public TextView (TextBuffer buffer) : base (IntPtr.Zero)
		{
			if (GetType() != typeof (TextView)) {
				CreateNativeObject (new string [0], new GLib.Value [0]);
				Buffer = buffer;
				return;
			}

			Raw = gtk_text_view_new_with_buffer (buffer.Handle);
		}

		[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
		delegate void MoveFocusSignalDelegate (IntPtr arg0, int arg1, IntPtr gch);

		static void MoveFocusSignalCallback (IntPtr arg0, int arg1, IntPtr gch)
		{
			Gtk.MoveFocusArgs args = new Gtk.MoveFocusArgs ();
			try {
				GLib.Signal sig = ((GCHandle) gch).Target as GLib.Signal;
				if (sig == null)
					throw new Exception("Unknown signal GC handle received " + gch);

				args.Args = new object[1];
				args.Args[0] = (Gtk.DirectionType) arg1;
				Gtk.MoveFocusHandler handler = (Gtk.MoveFocusHandler) sig.Handler;
				handler (GLib.Object.GetObject (arg0), args);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
		delegate void MoveFocusVMDelegate (IntPtr text_view, int direction);

		static MoveFocusVMDelegate MoveFocusVMCallback;

		static void movefocus_cb (IntPtr text_view, int direction)
		{
			try {
				TextView text_view_managed = GLib.Object.GetObject (text_view, false) as TextView;
				text_view_managed.OnMoveFocus ((Gtk.DirectionType) direction);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		private static void OverrideMoveFocus (GLib.GType gtype)
		{
			if (MoveFocusVMCallback == null)
				MoveFocusVMCallback = new MoveFocusVMDelegate (movefocus_cb);
			OverrideVirtualMethod (gtype, "move_focus", MoveFocusVMCallback);
		}

		[Obsolete ("Replaced by keybinding signal on Gtk.Widget")]
		[GLib.DefaultSignalHandler(Type=typeof(Gtk.TextView), ConnectionMethod="OverrideMoveFocus")]
		protected virtual void OnMoveFocus (Gtk.DirectionType direction)
		{
			GLib.Value ret = GLib.Value.Empty;
			GLib.ValueArray inst_and_params = new GLib.ValueArray (2);
			GLib.Value[] vals = new GLib.Value [2];
			vals [0] = new GLib.Value (this);
			inst_and_params.Append (vals [0]);
			vals [1] = new GLib.Value (direction);
			inst_and_params.Append (vals [1]);
			g_signal_chain_from_overridden (inst_and_params.ArrayPtr, ref ret);
			foreach (GLib.Value v in vals)
				v.Dispose ();
		}

		[Obsolete ("Replaced by keybinding signal on Gtk.Widget")]
		[GLib.Signal("move_focus")]
		public event Gtk.MoveFocusHandler MoveFocus {
			add {
				GLib.Signal sig = GLib.Signal.Lookup (this, "move_focus", new MoveFocusSignalDelegate(MoveFocusSignalCallback));
				sig.AddDelegate (value);
			}
			remove {
				GLib.Signal sig = GLib.Signal.Lookup (this, "move_focus", new MoveFocusSignalDelegate(MoveFocusSignalCallback));
				sig.RemoveDelegate (value);
			}
		}