content: {-# LANGUAGE FlexibleInstances #-}
  {-# LANGUAGE OverloadedStrings #-}
  {-# LANGUAGE DataKinds #-}
  {-# LANGUAGE TypeSynonymInstances #-}
  {-# LANGUAGE TypeApplications #-}
  
  {-# OPTIONS_GHC -fno-warn-orphans  #-}
  
  module IHaskell.Display.Widgets.Style.DescriptionStyle
    ( -- * Description style
      DescriptionStyle
      -- * Create a new description style
    , mkDescriptionStyle
    ) where
  
  -- To keep `cabal repl` happy when running from the ihaskell repo
  import           Prelude
  
  import           Data.Aeson
  import           Data.IORef (newIORef)
  
  import           IHaskell.Display
  import           IHaskell.Eval.Widgets
  import           IHaskell.IPython.Message.UUID as U
  
  import           IHaskell.Display.Widgets.Types
  
  -- | A 'DescriptionStyle' represents a Button Style from IPython.html.widgets.
  type DescriptionStyle = IPythonWidget DescriptionStyleType
  
  -- | Create a new button style
  mkDescriptionStyle :: IO DescriptionStyle
  mkDescriptionStyle = do
    wid <- U.random
  
    let stl = defaultDescriptionStyleWidget "DescriptionStyleModel"
        btnStlState = WidgetState stl
  
    stateIO <- newIORef btnStlState
  
    let style = IPythonWidget wid stateIO
  
    -- Open a comm for this widget, and store it in the kernel state
    widgetSendOpen style $ toJSON btnStlState
  
    -- Return the style widget
    return style
  
  instance IHaskellWidget DescriptionStyle where
    getCommUUID = uuid
  