// Gtk.Clipboard.custom - Customizations for the Clipboard class
//
// Authors:  Mike Kestner  <mkestner@novell.com>
//
// Copyright (c) 2005  Novell, Inc.
//
// 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-win32-2.0-0.dll")]
		static extern bool gtk_clipboard_set_with_data(IntPtr raw, TargetEntry[] targets, int n_targets, GtkSharp.ClipboardGetFuncNative get_func, GtkSharp.ClipboardClearFuncNative clear_func, IntPtr data);

		[DllImport("libgtk-win32-2.0-0.dll")]
		static extern bool gtk_clipboard_set_with_owner(IntPtr raw, TargetEntry[] targets, int n_targets, GtkSharp.ClipboardGetFuncNative get_func, GtkSharp.ClipboardClearFuncNative clear_func, IntPtr owner);

		void ClearProxy (Clipboard clipboard)
		{
			if (PersistentData ["clear_func"] != null)  {
				ClipboardClearFunc clear = PersistentData ["clear_func"] as ClipboardClearFunc;
				clear (clipboard);
			}
			SetPersistentData (null, null, null);
		}

		void SetPersistentData (object get_func_wrapper, object clear_func, object clear_proxy_wrapper)
		{
			PersistentData ["get_func_wrapper"] = get_func_wrapper;
			PersistentData ["clear_func"] = clear_func;
			PersistentData ["clear_proxy_wrapper"] = clear_proxy_wrapper;
		}

		public bool SetWithData (TargetEntry[] targets, ClipboardGetFunc get_func, ClipboardClearFunc clear_func)
		{
			ClipboardClearFunc clear_proxy = new ClipboardClearFunc (ClearProxy);
			GtkSharp.ClipboardGetFuncWrapper get_func_wrapper = new GtkSharp.ClipboardGetFuncWrapper (get_func);
			GtkSharp.ClipboardClearFuncWrapper clear_proxy_wrapper = new GtkSharp.ClipboardClearFuncWrapper (clear_proxy);
			bool ret = gtk_clipboard_set_with_data (Handle, targets, targets.Length, get_func_wrapper.NativeDelegate, clear_proxy_wrapper.NativeDelegate, IntPtr.Zero);
			SetPersistentData (get_func_wrapper, clear_func, clear_proxy_wrapper);
			return ret;
		}

		public bool SetWithOwner (TargetEntry[] targets, ClipboardGetFunc get_func, ClipboardClearFunc clear_func, GLib.Object owner)
		{
			ClipboardClearFunc clear_proxy = new ClipboardClearFunc (ClearProxy);
			GtkSharp.ClipboardGetFuncWrapper get_func_wrapper = new GtkSharp.ClipboardGetFuncWrapper (get_func);
			GtkSharp.ClipboardClearFuncWrapper clear_proxy_wrapper = new GtkSharp.ClipboardClearFuncWrapper (clear_proxy);
			bool ret = gtk_clipboard_set_with_owner (Handle, targets, targets.Length, get_func_wrapper.NativeDelegate, clear_proxy_wrapper.NativeDelegate, owner == null ? IntPtr.Zero : owner.Handle);
			SetPersistentData (get_func_wrapper, clear_func, clear_proxy_wrapper);
			return ret;
		}