{-# LINE 2 "./Graphics/UI/Gtk/Abstract/Bin.chs" #-}
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Widget Bin
--
-- Author : Duncan Coutts
--
-- Created: 25 April 2004
--
-- Copyright (C) 2004-2005 Duncan Coutts
--
-- 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 container with just one child
--
module Graphics.UI.Gtk.Abstract.Bin (
-- * Detail
--
-- | The 'Bin' widget is a container with just one child. It is not very
-- useful itself, but it is useful for deriving subclasses, since it provides
-- common code needed for handling a single child widget.
--
-- Many Gtk+ widgets are subclasses of 'Bin', including 'Window', 'Button',
-- 'Frame', 'HandleBox', and 'ScrolledWindow'.

-- * Class Hierarchy
-- |
-- @
-- | 'GObject'
-- | +----'Object'
-- | +----'Widget'
-- | +----'Container'
-- | +----Bin
-- | +----'Window'
-- | +----'Alignment'
-- | +----'Frame'
-- | +----'Button'
-- | +----'Item'
-- | +----'ComboBox'
-- | +----'EventBox'
-- | +----'Expander'
-- | +----'HandleBox'
-- | +----'ToolItem'
-- | +----'ScrolledWindow'
-- | +----'Viewport'
-- @

-- * Types
  Bin,
  BinClass,
  castToBin, gTypeBin,
  toBin,

-- * Methods
  binGetChild,
  ) where

import System.Glib.FFI
import Graphics.UI.Gtk.Abstract.Object (makeNewObject)
import Graphics.UI.Gtk.Types
{-# LINE 73 "./Graphics/UI/Gtk/Abstract/Bin.chs" #-}


{-# LINE 75 "./Graphics/UI/Gtk/Abstract/Bin.chs" #-}

--------------------
-- Methods

-- | Gets the child of the 'Bin', or @Nothing@ if the bin contains no child
-- widget.
--
binGetChild :: BinClass self => self
 -> IO (Maybe Widget) -- ^ returns pointer to child of the 'Bin'
binGetChild :: forall self. BinClass self => self -> IO (Maybe Widget)
binGetChild self
self =
  (IO (Ptr Widget) -> IO Widget)
-> IO (Ptr Widget) -> IO (Maybe Widget)
forall a. (IO (Ptr a) -> IO a) -> IO (Ptr a) -> IO (Maybe a)
maybeNull ((ForeignPtr Widget -> Widget, FinalizerPtr Widget)
-> IO (Ptr Widget) -> IO Widget
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
makeNewObject (ForeignPtr Widget -> Widget, FinalizerPtr Widget)
forall {a}. (ForeignPtr Widget -> Widget, FinalizerPtr a)
mkWidget) (IO (Ptr Widget) -> IO (Maybe Widget))
-> IO (Ptr Widget) -> IO (Maybe Widget)
forall a b. (a -> b) -> a -> b
$
  (\(Bin ForeignPtr Bin
arg1) -> ForeignPtr Bin -> (Ptr Bin -> IO (Ptr Widget)) -> IO (Ptr Widget)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Bin
arg1 ((Ptr Bin -> IO (Ptr Widget)) -> IO (Ptr Widget))
-> (Ptr Bin -> IO (Ptr Widget)) -> IO (Ptr Widget)
forall a b. (a -> b) -> a -> b
$ \Ptr Bin
argPtr1 ->Ptr Bin -> IO (Ptr Widget)
gtk_bin_get_child Ptr Bin
argPtr1)
{-# LINE 87 "./Graphics/UI/Gtk/Abstract/Bin.chs" #-}
    (toBin self)

foreign import ccall safe "gtk_bin_get_child"
  gtk_bin_get_child :: ((Ptr Bin) -> (IO (Ptr Widget)))