{-# LANGUAGE CPP #-}
-- -*-haskell-*-
--  GIMP Toolkit (GTK) Widget accessible
--
--  Author : Andy Stewart
--
--  Created: 23 Oct 2010
--
--  Copyright (C) 2010 Andy Stewart
--
--  This library is free software; you can redistribute it and/or
--  modify it under the terms of the GNU Lesser General Public
--  License as published by the Free Software Foundation; either
--  version 2.1 of the License, or (at your option) any later version.
--
--  This library 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.
--
-- |
-- Maintainer  : gtk2hs-users@lists.sourceforge.net
-- Stability   : provisional
-- Portability : portable (depends on GHC)
--
-- A 'Object' representing an adjustable bounded value
--
module Graphics.UI.Gtk.Misc.Accessible (
-- * Detail
--
-- | Accessible accessibility support for widgets.
--  

-- * Class Hierarchy
-- |
-- @
-- |  'GObject'
-- |   +----'AtkObject'
-- |         +----Accessible
-- @

#if GTK_CHECK_VERSION(2,22,0)
-- * Types
  Accessible,
  AccessibleClass,
  castToAccessible, gTypeAccessible,
  toAccessible,

-- * Methods
  accessibleGetWidget,
  accessibleSetWidget
#endif
) where

import Control.Monad	(liftM)

import System.Glib.FFI
import System.Glib.Attributes
import System.Glib.Properties
import Graphics.UI.Gtk.Abstract.Object	(makeNewObject)
{#import Graphics.UI.Gtk.Types#}
{#import Graphics.UI.Gtk.Signals#}

{# context lib="gtk" prefix="gtk" #}

#if GTK_CHECK_VERSION(2,22,0)
--------------------
-- Methods

-- | Gets the 'Widget' corresponding to the 'Accessible'.
--
-- * Available since Gtk+ version 2.22
--
accessibleGetWidget :: AccessibleClass self => self
                    -> IO (Maybe Widget) -- ^ returns the 'Widget' corresponding to the 'Accessible', or 'Nothing'.
accessibleGetWidget self =
  maybeNull (makeNewObject mkWidget) $
  {# call accessible_get_widget #}
    (toAccessible self)

-- | Sets the 'Widget' corresponding to the 'Accessible'.
--
-- * Available since Gtk+ version 2.22
--
accessibleSetWidget :: (AccessibleClass self, WidgetClass widget) 
                      => self -- ^ @accessible@ a 'Accessible' 
                      -> widget -- ^ @widget@     a 'Widget'     
                      -> IO ()
accessibleSetWidget self widget =                       
  {#call accessible_set_widget #}
     (toAccessible self)
     (toWidget widget)
#endif