SettingsValue.hs


{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)
-}

module GI.Gtk.Structs.SettingsValue
    ( 

-- * Exported types
    SettingsValue(..)                       ,
    newZeroSettingsValue                    ,
    noSettingsValue                         ,


 -- * Properties
-- ** Origin
    settingsValueReadOrigin                 ,


-- ** Value
    settingsValueReadValue                  ,




    ) where

import Prelude ()
import Data.GI.Base.ShortPrelude

import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map

import GI.Gtk.Types
import GI.Gtk.Callbacks

newtype SettingsValue = SettingsValue (ForeignPtr SettingsValue)
-- | Construct a `SettingsValue` struct initialized to zero.
newZeroSettingsValue :: MonadIO m => m SettingsValue
newZeroSettingsValue = liftIO $ callocBytes 32 >>= wrapPtr SettingsValue

noSettingsValue :: Maybe SettingsValue
noSettingsValue = Nothing

settingsValueReadOrigin :: SettingsValue -> IO T.Text
settingsValueReadOrigin s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 0) :: IO CString
    val' <- cstringToText val
    return val'

settingsValueReadValue :: SettingsValue -> IO GValue
settingsValueReadValue s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 8) :: IO (Ptr GValue)
    val' <- (newBoxed GValue) val
    return val'

type family ResolveSettingsValueMethod (t :: Symbol) (o :: *) :: * where
    ResolveSettingsValueMethod l o = MethodResolutionFailed l o

instance (info ~ ResolveSettingsValueMethod t SettingsValue, MethodInfo info SettingsValue p) => IsLabelProxy t (SettingsValue -> p) where
    fromLabelProxy _ = overloadedMethod (MethodProxy :: MethodProxy info)

#if MIN_VERSION_base(4,9,0)
instance (info ~ ResolveSettingsValueMethod t SettingsValue, MethodInfo info SettingsValue p) => IsLabel t (SettingsValue -> p) where
    fromLabel _ = overloadedMethod (MethodProxy :: MethodProxy info)
#endif