// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2004-2006 Novell, Inc.
//
// Authors:
//	Peter Bartok	pbartok@novell.com

// NOT COMPLETE

// define to log API calls to stdout
#undef DriverDebug
#undef DriverDebugPaint
#undef DriverDebugCreate
#undef DriverDebugDestroy
#undef DriverDebugState

using System;
using System.Drawing;
using System.ComponentModel;
using System.Collections;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;

namespace System.Windows.Forms {
	internal class XplatUI {
		#region Local Variables
		static XplatUIDriver		driver;
//		static String			default_class_name;
		internal static ArrayList key_filters = new ArrayList ();
		#endregion	// Local Variables

		#region Private Methods
		internal static string Window (IntPtr handle)
		{
			return String.Format ("'{0}' ({1:X})", Control.FromHandle (handle), handle.ToInt32 ());
		}

		[Conditional ("DriverDebug")]
		static void DriverDebug (string format, params object [] args)
		{
			Console.WriteLine (String.Format (format, args));
		}
		
		#endregion	// Private Methods

		#region Subclasses
		public class State {
			static public Keys ModifierKeys {
				get {
					return driver.ModifierKeys;
				}
			}

			static public MouseButtons MouseButtons {
				get {
					return driver.MouseButtons;
				}
			}

			static public Point MousePosition {
				get {
					return driver.MousePosition;
				}
			}

		}
		#endregion	// Subclasses

		#region Constructor & Destructor
		static XplatUI ()
		{
			// Compose name with current domain id because on Win32 we register class name
			// and name must be unique to process. If we load MWF into multiple appdomains
			// and try to register same class name we fail.
//			default_class_name = "SWFClass" + System.Threading.Thread.GetDomainID ().ToString ();

			if (RunningOnUnix) {
				//if (Environment.GetEnvironmentVariable ("not_supported_MONO_MWF_USE_NEW_X11_BACKEND") != null) {
				//        driver=XplatUIX11_new.GetInstance ();
				//} else 
				if (Environment.GetEnvironmentVariable ("MONO_MWF_MAC_FORCE_X11") != null) {
					driver = XplatUIX11.GetInstance ();
				} else {
					IntPtr buf = Marshal.AllocHGlobal (8192);
					// This is a hacktastic way of getting sysname from uname ()
					if (uname (buf) != 0) {
						// WTF: We cannot run uname
						driver=XplatUIX11.GetInstance ();
					} else {
						string os = Marshal.PtrToStringAnsi (buf);
						if (os == "Darwin")
							driver=XplatUICarbon.GetInstance ();
						else
							driver=XplatUIX11.GetInstance ();
					}
					Marshal.FreeHGlobal (buf);
				}
			} else {
				driver=XplatUIWin32.GetInstance ();
			}

			driver.InitializeDriver ();

			// Initialize things that need to be done after the driver is ready
			DataFormats.GetFormat (0);

			// Signal that the Application loop can be run.
			// This allows UIA to initialize a11y support for MWF
			// before the main loop begins.
			Application.FirePreRun ();
		}
		#endregion	// Constructor & Destructor

		#region Public Static Properties

		public static bool RunningOnUnix {
			get {
				int p = (int) Environment.OSVersion.Platform;
				
				return (p == 4 || p == 6 || p == 128);
			}
		}

		public static int ActiveWindowTrackingDelay {
			get { return driver.ActiveWindowTrackingDelay; }
		}

		// Compose name with current domain id because on Win32 we register class name
		// and name must be unique to process. If we load MWF into multiple appdomains
		// and try to register same class name we fail.
		internal static string GetDefaultClassName (Type type)
		{
			return "SWFClass" + Thread.GetDomainID ().ToString () + "." + type.ToString ();
		}

		static public Size Border3DSize {
			get {
				return driver.Border3DSize;
			}
		}

		static public Size BorderSize {
			get {
				return driver.BorderSize;
			}
		}

		static public Size CaptionButtonSize {
			get {
				return driver.CaptionButtonSize;
			}
		}

		static public int CaptionHeight {
			get {
				return driver.CaptionHeight;
			}
		}

		public static int CaretBlinkTime { get { return driver.CaretBlinkTime; } }
		public static int CaretWidth { get { return driver.CaretWidth; } }
		
		static public Size CursorSize {
			get {
				return driver.CursorSize;
			}
		}

		static public Size DoubleClickSize {
			get {
				return driver.DoubleClickSize;
			}
		}

		static public int DoubleClickTime {
			get {
				return driver.DoubleClickTime;
			}
		}

		static public bool DragFullWindows {
			get {
				return driver.DragFullWindows;
			}
		}

		static public Size DragSize {
			get {
				return driver.DragSize;
			}
		}

		static public Size FixedFrameBorderSize {
			get {
				return driver.FixedFrameBorderSize;
			}
		}

		public static int FontSmoothingContrast { get { return driver.FontSmoothingContrast; } }
		public static int FontSmoothingType { get { return driver.FontSmoothingType; } }

		public static Size FrameBorderSize {
			get {
				return driver.FrameBorderSize;
			}
		}

		public static int HorizontalResizeBorderThickness { get { return driver.HorizontalResizeBorderThickness; } }
		
		static public int HorizontalScrollBarHeight {
			get {
				return driver.HorizontalScrollBarHeight;
			}
		}

		static public Size IconSize {
			get {
				return driver.IconSize;
			}
		}

		public static bool IsActiveWindowTrackingEnabled { get { return driver.IsActiveWindowTrackingEnabled; } }
		public static bool IsComboBoxAnimationEnabled { get { return driver.IsComboBoxAnimationEnabled; } }
		public static bool IsDropShadowEnabled { get { return driver.IsDropShadowEnabled; } }
		public static bool IsFontSmoothingEnabled { get { return driver.IsFontSmoothingEnabled; } }
		public static bool IsHotTrackingEnabled { get { return driver.IsHotTrackingEnabled; } }
		public static bool IsIconTitleWrappingEnabled { get { return driver.IsIconTitleWrappingEnabled; } }
		public static bool IsKeyboardPreferred { get { return driver.IsKeyboardPreferred; } }
		public static bool IsListBoxSmoothScrollingEnabled { get { return driver.IsListBoxSmoothScrollingEnabled; } }
		public static bool IsMenuAnimationEnabled { get { return driver.IsMenuAnimationEnabled; } }
		public static bool IsMenuFadeEnabled { get { return driver.IsMenuFadeEnabled; } }
		public static bool IsMinimizeRestoreAnimationEnabled { get { return driver.IsMinimizeRestoreAnimationEnabled; } }
		public static bool IsSelectionFadeEnabled { get	{ return driver.IsSelectionFadeEnabled; } }
		public static bool IsSnapToDefaultEnabled { get { return driver.IsSnapToDefaultEnabled; } }
		public static bool IsTitleBarGradientEnabled { get { return driver.IsTitleBarGradientEnabled; } }
		public static bool IsToolTipAnimationEnabled { get { return driver.IsToolTipAnimationEnabled; } }
		
		static public int KeyboardSpeed {
			get {
				return driver.KeyboardSpeed;
			}
		}

		static public int KeyboardDelay {
			get {
				return driver.KeyboardDelay;
			}
		}

		static public Size MaxWindowTrackSize {
			get {
				return driver.MaxWindowTrackSize;
			}
		}

		static public bool MenuAccessKeysUnderlined {
			get {
				return driver.MenuAccessKeysUnderlined;
			}
		}

		static public Size MenuBarButtonSize { get { return driver.MenuBarButtonSize; } }

		public static Size MenuButtonSize {
			get {
				return driver.MenuButtonSize;
			}
		}

		static public int MenuShowDelay { get { return driver.MenuShowDelay; } }
		
		static public Size MinimizedWindowSize {
			get {
				return driver.MinimizedWindowSize;
			}
		}

		static public Size MinimizedWindowSpacingSize {
			get {
				return driver.MinimizedWindowSpacingSize;
			}
		}

		static public Size MinimumWindowSize {
			get {
				return driver.MinimumWindowSize;
			}
		}

		static public Size MinimumFixedToolWindowSize {
			get { return driver.MinimumFixedToolWindowSize; }
		}

		static public Size MinimumSizeableToolWindowSize {
			get { return driver.MinimumSizeableToolWindowSize; }
		}

		static public Size MinimumNoBorderWindowSize {
			get { return driver.MinimumNoBorderWindowSize; }
		}

		static public Size MinWindowTrackSize {
			get {
				return driver.MinWindowTrackSize;
			}
		}

		public static int MouseSpeed {
			get { return driver.MouseSpeed; }
		}
		
		static public Size SmallIconSize {
			get {
				return driver.SmallIconSize;
			}
		}

		static public int MenuHeight {
			get {
				return driver.MenuHeight;
			}
		}

		static public int MouseButtonCount {
			get {
				return driver.MouseButtonCount;
			}
		}

		static public bool MouseButtonsSwapped {
			get {
				return driver.MouseButtonsSwapped;
			}
		}

		static public Size MouseHoverSize {
			get {
				return driver.MouseHoverSize;
			}
		}

		static public int MouseHoverTime {
			get {
				return driver.MouseHoverTime;
			}
		}

		static public int MouseWheelScrollDelta {
			get {
				return driver.MouseWheelScrollDelta;
			}
		}
		
		static public bool MouseWheelPresent {
			get {
				return driver.MouseWheelPresent;
			}
		}

		public static LeftRightAlignment PopupMenuAlignment {
			get { return driver.PopupMenuAlignment; }
		}
		
		public static PowerStatus PowerStatus {
			get { return driver.PowerStatus; }
		}

		public static bool RequiresPositiveClientAreaSize {
			get {
				return driver.RequiresPositiveClientAreaSize;
			}
		}

		public static int SizingBorderWidth {
			get { return driver.SizingBorderWidth; }
		}
		
		public static Size SmallCaptionButtonSize {
			get { return driver.SmallCaptionButtonSize; }
		}
		
		public static bool UIEffectsEnabled {
			get { return driver.UIEffectsEnabled; }
		}
		
		static public bool UserClipWontExposeParent {
			get {
				return driver.UserClipWontExposeParent;
			}
		}

		public static int VerticalResizeBorderThickness { get { return driver.VerticalResizeBorderThickness; } }

		static public int VerticalScrollBarWidth {
			get {
				return driver.VerticalScrollBarWidth;
			}
		}

		static public Rectangle VirtualScreen {
			get {
				return driver.VirtualScreen;
			}
		}

		static public Rectangle WorkingArea {
			get {
				return driver.WorkingArea;
			}
		}

		public static Screen[] AllScreens {
			get {
				return driver.AllScreens;
			}
		}

		public static bool ThemesEnabled {
			get {
				return XplatUI.driver.ThemesEnabled;
			}
		}

		public static int ToolWindowCaptionHeight {
			get {
				return driver.ToolWindowCaptionHeight;
			}
		}

		public static Size ToolWindowCaptionButtonSize {
			get {
				return driver.ToolWindowCaptionButtonSize;
			}
		}
		#endregion	// Public Static Properties

		#region Events

		internal static event EventHandler Idle {
			add {
				driver.Idle += value;
			}
			remove {
				driver.Idle -= value;
			}
		}

		#endregion	// Events

		#region Public Static Methods
		internal static void Activate (IntPtr handle)
		{
			DriverDebug ("Activate ({0}): Called", Window (handle));
			driver.Activate (handle);
		}

		internal static void AudibleAlert (AlertType alert)
		{
			DriverDebug ("AudibleAlert (): Called");
			driver.AudibleAlert (alert);
		}

		internal static void BeginMoveResize (IntPtr handle)
		{
			driver.BeginMoveResize (handle);
		}

		internal static bool CalculateWindowRect (ref Rectangle ClientRect, CreateParams cp, Menu menu, out Rectangle WindowRect)
		{
			DriverDebug ("CalculateWindowRect ({0}, {1}, {2}): Called", ClientRect, cp, menu);
			return driver.CalculateWindowRect (ref ClientRect, cp, menu, out WindowRect);
		}

		internal static void CaretVisible (IntPtr handle, bool visible)
		{
			DriverDebug ("CaretVisible ({0:X}, {1}): Called", handle.ToInt32 (), visible);
			driver.CaretVisible (handle, visible);
		}

		internal static void CreateCaret (IntPtr handle, int width, int height)
		{
			DriverDebug ("CreateCaret ({0:X}), {1}, {2}: Called", handle.ToInt32 (), width, height);
			driver.CreateCaret (handle, width, height);
		}

		internal static IntPtr CreateWindow (CreateParams cp)
		{
			#if DriverDebug || DriverDebugCreate
				IntPtr handle;

				handle = driver.CreateWindow (cp);

				Console.WriteLine ("CreateWindow (): Called, returning {0:X}", handle.ToInt32 ());
				return handle;
			#else
				return driver.CreateWindow (cp);
			#endif
		}

		internal static IntPtr CreateWindow (IntPtr Parent, int X, int Y, int Width, int Height)
		{
			#if DriverDebug || DriverDebugCreate
				Console.WriteLine ("CreateWindow (): Called");
			#endif
			return driver.CreateWindow (Parent, X, Y, Width, Height);
		}

		internal static void ClientToScreen (IntPtr handle, ref int x, ref int y)
		{
			#if DriverDebug
				Console.WriteLine ("ClientToScreen ({0}, {1}, {2}): Called", Window (handle), x, y);
			#endif
			driver.ClientToScreen (handle, ref x, ref y);
		}

		internal static int[] ClipboardAvailableFormats (IntPtr handle)
		{
			DriverDebug ("ClipboardAvailableTypes ({0:X}): Called", handle.ToInt32 ());
			return driver.ClipboardAvailableFormats (handle);
		}

		internal static void ClipboardClose (IntPtr handle)
		{
			DriverDebug ("ClipboardClose ({0:X}): Called", handle.ToInt32 ());
			driver.ClipboardClose (handle);
		}

		internal static int ClipboardGetID (IntPtr handle, string format)
		{
			DriverDebug ("ClipboardGetID ({0:X}, {1}): Called", handle.ToInt32 (), format);
			return driver.ClipboardGetID (handle, format);
		}

		internal static IntPtr ClipboardOpen (bool primary_selection)
		{
			DriverDebug ("ClipboardOpen (): Called");
			return driver.ClipboardOpen (primary_selection);
		}

		internal static void ClipboardStore (IntPtr handle, object obj, int type, XplatUI.ObjectToClipboard converter, bool copy)
		{
			DriverDebug ("ClipboardStore ({0:X}, {1}, {2}, {3}, {4}): Called", handle.ToInt32 (), obj, type, converter, copy);
			driver.ClipboardStore (handle, obj, type, converter, copy);
		}

		internal static object ClipboardRetrieve (IntPtr handle, int type, XplatUI.ClipboardToObject converter)
		{
			DriverDebug ("ClipboardRetrieve ({0:X}, type, {1}): Called", handle.ToInt32 (), converter);
			return driver.ClipboardRetrieve (handle, type, converter);
		}

		internal static IntPtr DefineCursor (Bitmap bitmap, Bitmap mask, Color cursor_pixel, Color mask_pixel, int xHotSpot, int yHotSpot)
		{
			DriverDebug ("DefineCursor (...): Called");
			return driver.DefineCursor (bitmap, mask, cursor_pixel, mask_pixel, xHotSpot, yHotSpot);
		}

		internal static IntPtr DefineStdCursor (StdCursor id)
		{
			return driver.DefineStdCursor (id);
		}
		
		internal static Bitmap DefineStdCursorBitmap (StdCursor id)
		{
			return driver.DefineStdCursorBitmap (id);
		}

		internal static IntPtr DefWndProc (ref Message msg)
		{
			return driver.DefWndProc (ref msg);
		}

		internal static void DestroyCaret (IntPtr handle)
		{
			DriverDebug ("DestroyCaret ({0:X}): Called", handle.ToInt32 ());
			driver.DestroyCaret (handle);
		}

		internal static void DestroyCursor (IntPtr cursor)
		{
			DriverDebug ("DestroyCursor ({0:X}): Called", cursor.ToInt32 ());
			driver.DestroyCursor (cursor);
		}

		internal static void DestroyWindow (IntPtr handle)
		{
			DriverDebug ("DestroyWindow ({0}): Called", Window (handle));
			driver.DestroyWindow (handle);
		}

		internal static IntPtr DispatchMessage (ref MSG msg)
		{
			return driver.DispatchMessage (ref msg);
		}

		internal static void DoEvents ()
		{
			driver.DoEvents ();
		}

		internal static void DrawReversibleRectangle (IntPtr handle, Rectangle rect, int line_width)
		{
			DriverDebug ("DrawReversibleRectangle ({0}, {1}, {2}): Called", Window (handle), rect, line_width);
			driver.DrawReversibleRectangle (handle, rect, line_width);
		}

		internal static void FillReversibleRectangle (Rectangle rectangle, Color backColor)
		{
			DriverDebug ("FillReversibleRectangle ({0}, {1}): Called", rectangle, backColor);
			driver.FillReversibleRectangle (rectangle, backColor);
		}

		internal static void DrawReversibleFrame (Rectangle rectangle, Color backColor, FrameStyle style)
		{
			DriverDebug ("DrawReversibleFrame ({0}, {1}, {2}): Called", rectangle, backColor, style);
			driver.DrawReversibleFrame (rectangle, backColor, style);
		}

		internal static void DrawReversibleLine (Point start, Point end, Color backColor)
		{
			DriverDebug ("DrawReversibleLine ({0}, {1}, {2}): Called", start, end, backColor);
			driver.DrawReversibleLine (start, end, backColor);
		}

		internal static void EnableThemes ()
		{
			driver.EnableThemes ();
		}

		internal static void EnableWindow (IntPtr handle, bool Enable)
		{
			DriverDebug ("EnableWindow ({0}, {1}): Called", Window (handle), Enable);
			driver.EnableWindow (handle, Enable);
		}

		internal static void EndLoop (Thread thread)
		{
			DriverDebug ("EndLoop ({0:X}): Called", thread.GetHashCode ());
			driver.EndLoop (thread);
		}

		internal static IntPtr GetActive ()
		{
			DriverDebug ("GetActive (): Called");
			return driver.GetActive ();
		}

		internal static SizeF GetAutoScaleSize (Font font)
		{
			DriverDebug ("GetAutoScaleSize ({0}): Called", font);
			return driver.GetAutoScaleSize (font);
		}

		internal static Region GetClipRegion (IntPtr handle)
		{
			DriverDebug ("GetClipRegion ({0}): Called", Window (handle));
			return driver.GetClipRegion (handle);
		}

		internal static void GetCursorInfo (IntPtr cursor, out int width, out int height, out int hotspot_x, out int hotspot_y)
		{
			DriverDebug ("GetCursorInfo ({0}): Called", cursor.ToInt32 ());
			driver.GetCursorInfo (cursor, out width, out height, out hotspot_x, out hotspot_y);
		}

		internal static void GetCursorPos (IntPtr handle, out int x, out int y)
		{
			DriverDebug ("GetCursorPos ({0}): Called", Window (handle));
			driver.GetCursorPos (handle, out x, out y);
		}

		internal static void GetDisplaySize (out Size size) 
		{
			DriverDebug ("GetDisplaySize (): Called");
			driver.GetDisplaySize (out size);
		}

		internal static IntPtr GetFocus ()
		{
			DriverDebug ("GetFocus (): Called, Result:{0}", Window (driver.GetFocus ()));
			return driver.GetFocus ();
		}

		internal static bool GetFontMetrics (Graphics g, Font font, out int ascent, out int descent)
		{
			DriverDebug ("GetFontMetrics (): Called");
			return driver.GetFontMetrics (g, font, out ascent, out descent);
		}
			
		internal static Point GetMenuOrigin (IntPtr handle)
		{
			DriverDebug ("GetMenuOrigin ({0}): Called", Window (handle));
			return driver.GetMenuOrigin (handle);
		}

		internal static bool GetMessage (object queue_id, ref MSG msg, IntPtr hWnd, int wFilterMin, int wFilterMax)
		{
			return driver.GetMessage (queue_id, ref msg, hWnd, wFilterMin, wFilterMax);
		}

		internal static IntPtr GetParent (IntPtr handle)
		{
			DriverDebug ("GetParent ({0}): Called", Window (handle));
			return driver.GetParent (handle);
		}

		internal static IntPtr GetPreviousWindow (IntPtr handle)
		{
			return driver.GetPreviousWindow (handle);
		}

		internal static bool GetText (IntPtr handle, out string text)
		{
			DriverDebug ("GetText ({0}): Called", Window (handle));
			return driver.GetText (handle, out text);
		}

		internal static void GetWindowPos (IntPtr handle, bool is_toplevel, out int x, out int y, out int width, out int height, out int client_width, out int client_height)
		{
			DriverDebug ("GetWindowPos ({0}): Called", Window (handle));
			driver.GetWindowPos (handle, is_toplevel, out x, out y, out width, out height, out client_width, out client_height);
		}

		/* this method can (and does, on X11) return
		 * (FormWindowState) (-1), when the state of the window
		 * cannot be determined (in the X11 case, when the
		 * window isn't mapped.)  Checking for the additional
		 * return value is less expensive than
		 * throwing/catching an exception. */
		internal static FormWindowState GetWindowState (IntPtr handle)
		{
			DriverDebug ("GetWindowState ({0}): Called", Window (handle));
			return driver.GetWindowState (handle);
		}

		internal static void GrabInfo (out IntPtr handle, out bool GrabConfined, out Rectangle GrabArea)
		{
			DriverDebug ("GrabInfo (): Called");
			driver.GrabInfo (out handle, out GrabConfined, out GrabArea);
		}

		internal static void GrabWindow (IntPtr handle, IntPtr ConfineToHwnd)
		{
			DriverDebug ("GrabWindow ({0}, {1}): Called", Window (handle), Window (ConfineToHwnd));
			driver.GrabWindow (handle, ConfineToHwnd);
		}

		internal static void HandleException (Exception e)
		{
			driver.HandleException (e);
		}

		internal static void Invalidate (IntPtr handle, Rectangle rc, bool clear)
		{
			DriverDebug ("Invalidate ({0}, {1}, {2}): Called", Window (handle), rc, clear);
			driver.Invalidate (handle, rc, clear);
		}

		internal static void InvalidateNC (IntPtr handle)
		{
			DriverDebug ("InvalidateNC ({0}): Called", Window (handle));
			driver.InvalidateNC (handle);
		}


		internal static bool IsEnabled (IntPtr handle)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("IsEnabled ({0}): Called, Result={1}", Window (handle), driver.IsEnabled (handle));
			#endif
			return driver.IsEnabled (handle);
		}

		internal static bool IsKeyLocked (VirtualKeys key)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("IsKeyLocked ({0}): Called, Result={1}", key, driver.IsKeyLocked (key));
			#endif
			return driver.IsKeyLocked (key);
		}

		internal static bool IsVisible (IntPtr handle)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("IsVisible ({0}): Called, Result={1}", Window (handle), driver.IsVisible (handle));
			#endif
			return driver.IsVisible (handle);
		}

		internal static void KillTimer (Timer timer)
		{
			DriverDebug ("KillTimer ({0}): Called", timer);
			driver.KillTimer (timer);
		}

		internal static void MenuToScreen (IntPtr handle, ref int x, ref int y)
		{
			DriverDebug ("MenuToScreen ({0}, {1}, {2}): Called", Window (handle), x, y);
			driver.MenuToScreen (handle, ref x, ref y);
		}

		internal static void OverrideCursor (IntPtr cursor)
		{
			DriverDebug ("OverrideCursor ({0:X}): Called", cursor.ToInt32 ());
			driver.OverrideCursor (cursor);
		}

		internal static void PaintEventEnd (ref Message msg, IntPtr handle, bool client)
		{
			#if DriverDebug || DriverDebugPaint
				Console.WriteLine ("PaintEventEnd ({0}, {1}, {2}): Called from thread {3}", msg, Window (handle), client, Thread.CurrentThread.GetHashCode ());
			#endif
			driver.PaintEventEnd (ref msg, handle, client);
		}

		internal static PaintEventArgs PaintEventStart (ref Message msg, IntPtr handle, bool client)
		{
			#if DriverDebug || DriverDebugPaint
				Console.WriteLine ("PaintEventStart ({0}, {1}, {2}): Called from thread {3}", msg, Window (handle), client, Thread.CurrentThread.GetHashCode ());
			#endif
			return driver.PaintEventStart (ref msg, handle, client);
		}

		internal static bool PeekMessage (Object queue_id, ref MSG msg, IntPtr hWnd, int wFilterMin, int wFilterMax, uint flags)
		{
			return driver.PeekMessage (queue_id, ref msg, hWnd, wFilterMin, wFilterMax, flags);
		}

		internal static bool PostMessage (IntPtr hwnd, Msg message, IntPtr wParam, IntPtr lParam)
		{
			DriverDebug ("PostMessage ({0}, {1}, {2:X}, {3:X}): Called", Window (hwnd), message, wParam.ToInt32 (), lParam.ToInt32 ());
			return driver.PostMessage (hwnd, message, wParam, lParam);
		}

		internal static bool PostMessage (ref MSG msg)
		{
			DriverDebug ("PostMessage ({0}): Called", msg);
			return driver.PostMessage (msg.hwnd, msg.message, msg.wParam, msg.lParam);
		}

		internal static void PostQuitMessage (int exitCode)
		{
			DriverDebug ("PostQuitMessage ({0}): Called", exitCode);
			driver.PostQuitMessage (exitCode);
		}

		internal static void RaiseIdle (EventArgs e)
		{
			DriverDebug ("RaiseIdle ({0}): Called", e.ToString ());
			
			driver.RaiseIdle (e);
		}
		
		internal static void RequestAdditionalWM_NCMessages (IntPtr handle, bool hover, bool leave)
		{
			DriverDebug ("RequestAdditionalWM_NCMessages ({0}, {1}, {2}): Called", Window (handle), hover, leave);
			driver.RequestAdditionalWM_NCMessages (handle, hover, leave);
		}

		internal static void RequestNCRecalc (IntPtr handle)
		{
			DriverDebug ("RequestNCRecalc ({0}): Called", Window (handle));
			driver.RequestNCRecalc (handle);
		}

		internal static void ResetMouseHover (IntPtr handle)
		{
			DriverDebug ("ResetMouseHover ({0}): Called", Window (handle));
			driver.ResetMouseHover (handle);
		}

		internal static void ScreenToClient (IntPtr handle, ref int x, ref int y)
		{
			DriverDebug ("ScreenToClient ({0}, {1}, {2}): Called", Window (handle), x, y);
			driver.ScreenToClient (handle, ref x, ref y);
		}

		internal static void ScreenToMenu (IntPtr handle, ref int x, ref int y)
		{
			DriverDebug ("ScreenToMenu ({0}, {1}, {2}): Called", Window (handle), x, y);
			driver.ScreenToMenu (handle, ref x, ref y);
		}

		internal static void ScrollWindow (IntPtr handle, Rectangle rectangle, int XAmount, int YAmount, bool with_children)
		{
			DriverDebug ("ScrollWindow ({0}, {1}, {2}, {3}, {4}): Called", Window (handle), rectangle, XAmount, YAmount, with_children);
			driver.ScrollWindow (handle, rectangle, XAmount, YAmount, with_children);
		}

		internal static void ScrollWindow (IntPtr handle, int XAmount, int YAmount, bool with_children)
		{
			DriverDebug ("ScrollWindow ({0}, {1}, {2}, {3}): Called", Window (handle), XAmount, YAmount, with_children);
			driver.ScrollWindow (handle, XAmount, YAmount, with_children);
		}

		internal static void SendAsyncMethod (AsyncMethodData data)
		{
			DriverDebug ("SendAsyncMethod ({0}): Called", data);
			driver.SendAsyncMethod (data);
		}

		internal static int SendInput (IntPtr hwnd, Queue keys)
		{
			DriverDebug ("SendInput ({0}, {1}): Called", hwnd, keys);
			return driver.SendInput (hwnd, keys);
		}

		internal static IntPtr SendMessage (IntPtr handle, Msg message, IntPtr wParam, IntPtr lParam)
		{
			DriverDebug ("SendMessage ({0}, {1}, {2:X}, {3:X}): Called", Window (handle), message, wParam.ToInt32 (), lParam.ToInt32 ());
			return driver.SendMessage (handle, message, wParam, lParam);
		}

		internal static void SendMessage (ref Message m)
		{
			DriverDebug ("SendMessage ({0}): Called", m);
			m.Result = driver.SendMessage (m.HWnd, (Msg)m.Msg, m.WParam, m.LParam);
		}

		internal static void SetAllowDrop (IntPtr handle, bool value)
		{
			DriverDebug  ("SetAllowDrop ({0}, {1}): Called", handle, value);
			driver.SetAllowDrop (handle, value);
		}

		internal static void SetBorderStyle (IntPtr handle, FormBorderStyle border_style)
		{
			DriverDebug ("SetBorderStyle ({0}, {1}): Called", Window (handle), border_style);
			driver.SetBorderStyle (handle, border_style);
		}

		internal static void SetCaretPos (IntPtr handle, int x, int y)
		{
			DriverDebug ("SetCaretPos ({0}, {1}, {2}): Called", Window (handle), x, y);
			driver.SetCaretPos (handle, x, y);
		}

		internal static void SetClipRegion (IntPtr handle, Region region)
		{
			DriverDebug ("SetClipRegion ({0}, {1}): Called", Window (handle), region);
			driver.SetClipRegion (handle, region);
		}

		internal static void SetCursor (IntPtr handle, IntPtr cursor)
		{
			DriverDebug ("SetCursor ({0}, {1:X}): Called", Window (handle), cursor.ToInt32 ());
			driver.SetCursor (handle, cursor);
		}

		internal static void SetCursorPos (IntPtr handle, int x, int y)
		{
			DriverDebug ("SetCursorPos ({0}, {1}, {2}): Called", Window (handle), x, y);
			driver.SetCursorPos (handle, x, y);
		}

		internal static void SetFocus (IntPtr handle)
		{
			DriverDebug ("SetFocus ({0}): Called", Window (handle));
			driver.SetFocus (handle);
		}

		internal static void SetForegroundWindow (IntPtr handle)
		{
			DriverDebug ("SetForegroundWindow ({0}): Called", Window (handle));
			driver.SetForegroundWindow (handle);
		}

		internal static void SetIcon (IntPtr handle, Icon icon)
		{
			DriverDebug ("SetIcon ({0}, {1}): Called", Window (handle), icon);
			driver.SetIcon (handle, icon);
		}

		internal static void SetMenu (IntPtr handle, Menu menu)
		{
			DriverDebug ("SetMenu ({0}, {1}): Called", Window (handle), menu);
			driver.SetMenu (handle, menu);
		}

		internal static void SetModal (IntPtr handle, bool Modal)
		{
			DriverDebug ("SetModal ({0}, {1}): Called", Window (handle), Modal);
			driver.SetModal (handle, Modal);
		}

		internal static IntPtr SetParent (IntPtr handle, IntPtr hParent)
		{
			DriverDebug ("SetParent ({0}, {1:X}): Called", Window (handle), Window (hParent));
			return driver.SetParent (handle, hParent);
		}

		internal static void SetTimer (Timer timer)
		{
			DriverDebug ("SetTimer ({0}): Called", timer);
			driver.SetTimer (timer);
		}

		internal static bool SetTopmost (IntPtr handle, bool Enabled)
		{
			DriverDebug ("SetTopMost ({0}, {1}): Called", Window (handle), Enabled);
			return driver.SetTopmost (handle, Enabled);
		}

		internal static bool SetOwner (IntPtr handle, IntPtr hWndOwner)
		{
			DriverDebug ("SetOwner ({0}, {1}): Called", Window (handle), Window (hWndOwner));
			return driver.SetOwner (handle, hWndOwner);
		}

		internal static bool SetVisible (IntPtr handle, bool visible, bool activate)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("SetVisible ({0}, {1}, {2}): Called", Window (handle), visible, activate);
			#endif
			return driver.SetVisible (handle, visible, activate);
		}

		internal static void SetWindowMinMax (IntPtr handle, Rectangle maximized, Size min, Size max)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("SetWindowMinMax ({0}, {1}, {2}, {3}): Called", Window (handle), maximized, min, max);
			#endif
			driver.SetWindowMinMax (handle, maximized, min, max);
		}

		internal static void SetWindowPos (IntPtr handle, int x, int y, int width, int height)
		{
			DriverDebug ("SetWindowPos ({0}, {1}, {2}, {3}, {4}): Called", Window (handle), x, y, width, height);
			driver.SetWindowPos (handle, x, y, width, height);
		}

		internal static void SetWindowState (IntPtr handle, FormWindowState state)
		{
			#if DriverDebug || DriverDebugState
				Console.WriteLine ("SetWindowState ({0} {1}): Called", Window (handle), state);
			#endif
			driver.SetWindowState (handle, state);
		}

		internal static void SetWindowStyle (IntPtr handle, CreateParams cp)
		{
			DriverDebug ("SetWindowStyle ({0}): Called", Window (handle));
			driver.SetWindowStyle (handle, cp);
		}

		internal static double GetWindowTransparency (IntPtr handle)
		{
			DriverDebug ("SetWindowTransparency ({0}): Called", Window (handle));
			return driver.GetWindowTransparency (handle);
		}

		internal static void SetWindowTransparency (IntPtr handle, double transparency, Color key) 
		{
			DriverDebug ("SetWindowTransparency ({0}): Called", Window (handle));
			driver.SetWindowTransparency (handle, transparency, key);
		}

		internal static bool SetZOrder (IntPtr handle, IntPtr AfterhWnd, bool Top, bool Bottom)
		{
			DriverDebug ("SetZOrder ({0}, {1:X}, {2}, {3}): Called", Window (handle), Window (AfterhWnd), Top, Bottom);
			return driver.SetZOrder (handle, AfterhWnd, Top, Bottom);
		}

		internal static void ShowCursor (bool show)
		{
			DriverDebug ("ShowCursor ({0}): Called", show);
			driver.ShowCursor (show);
		}

		internal static DragDropEffects StartDrag (IntPtr handle, object data, DragDropEffects allowedEffects)
		{
			DriverDebug  ("StartDrag ({0}, {1}, {2}): Called", Window (handle), data, allowedEffects);
			return driver.StartDrag (handle, data, allowedEffects);
		}

		internal static object StartLoop (Thread thread)
		{
			DriverDebug ("StartLoop ({0:X}): Called", thread.GetHashCode ());
			return driver.StartLoop (thread);
		}

		internal static TransparencySupport SupportsTransparency ()
		{
			DriverDebug ("SupportsTransparency (): Called, result={0}", driver.SupportsTransparency ());
			return driver.SupportsTransparency ();
		}

		internal static bool SystrayAdd (IntPtr handle, string tip, Icon icon, out ToolTip tt)
		{
			DriverDebug ("SystrayAdd ({0}, {1}): Called", Window (handle), tip);
			return driver.SystrayAdd (handle, tip, icon, out tt);
		}

		internal static void SystrayChange (IntPtr handle, string tip, Icon icon, ref ToolTip tt)
		{
			DriverDebug ("SystrayChange ({0}, {1}): Called", Window (handle), tip);
			driver.SystrayChange (handle, tip, icon, ref tt);
		}

		internal static void SystrayRemove (IntPtr handle, ref ToolTip tt)
		{
			DriverDebug ("SystrayRemove ({0}): Called", Window (handle));
			driver.SystrayRemove (handle, ref tt);
		}

		internal static void SystrayBalloon (IntPtr handle, int timeout, string title, string text, ToolTipIcon icon)
		{
			DriverDebug ("SystrayBalloon ({0}, {1}, {2}, {3}, {4}): Called", Window (handle), timeout, title, text, icon);
			driver.SystrayBalloon (handle, timeout, title, text, icon);
		}

		internal static bool Text (IntPtr handle, string text)
		{
			DriverDebug ("Text ({0}, {1}): Called", Window (handle), text);
			return driver.Text (handle, text);
		}

		internal static bool TranslateMessage (ref MSG msg)
		{
			return driver.TranslateMessage (ref msg);
		}

		internal static void UngrabWindow (IntPtr handle)
		{
			DriverDebug ("UngrabWindow ({0}): Called", Window (handle));
			driver.UngrabWindow (handle);
		}

		internal static void UpdateWindow (IntPtr handle)
		{
			DriverDebug ("UpdateWindow ({0}): Called", Window (handle));
			driver.UpdateWindow (handle);
		}

		// double buffering
		internal static void CreateOffscreenDrawable (IntPtr handle,
							    int width, int height,
							    out object offscreen_drawable)
		{
			DriverDebug ("CreateOffscreenDrawable ({2}, {0},{1}): Called", width, height, Window (handle));
			driver.CreateOffscreenDrawable (handle, width, height,
							out offscreen_drawable);
		}

		internal static void DestroyOffscreenDrawable (object offscreen_drawable)
		{
			DriverDebug ("DestroyOffscreenDrawable (): Called");
			driver.DestroyOffscreenDrawable (offscreen_drawable);
		}

		internal static Graphics GetOffscreenGraphics (object offscreen_drawable)
		{
			DriverDebug ("GetOffscreenGraphics (): Called");
			return driver.GetOffscreenGraphics (offscreen_drawable);
		}

		internal static void BlitFromOffscreen (IntPtr dest_handle,
						      Graphics dest_dc,
						      object offscreen_drawable,
						      Graphics offscreen_dc,
						      Rectangle r)
		{
			DriverDebug ("BlitFromOffscreen ({0}): Called", Window (dest_handle));
			driver.BlitFromOffscreen (dest_handle, dest_dc, offscreen_drawable, offscreen_dc, r);
		}


		// Santa's little helper
		internal static void Version ()
		{
			Console.WriteLine ("Xplat version $Revision: $");
		}

		internal static void AddKeyFilter (IKeyFilter value)
		{
			lock (key_filters) {
				key_filters.Add (value);
			}
		}

		internal static bool FilterKey (KeyFilterData key)
		{
			lock (key_filters) {
				for (int i = 0; i < key_filters.Count; i++) {
					IKeyFilter filter = (IKeyFilter) key_filters[i];
					if (filter.PreFilterKey (key))
						return true;
				}
			}
			return false;
		}
		#endregion	// Public Static Methods

		#region	Delegates
		public delegate bool ClipboardToObject (int type, IntPtr data, out object obj);
		public delegate bool ObjectToClipboard (ref int type, object obj, out byte[] data);
		#endregion	// Delegates

		[DllImport ("libc")]
		static extern int uname (IntPtr buf);
	}
}