content: {-# LANGUAGE FlexibleInstances #-}
  {-# LANGUAGE OverloadedStrings #-}
  {-# LANGUAGE DataKinds #-}
  {-# LANGUAGE TypeSynonymInstances #-}
  {-# LANGUAGE TypeApplications #-}
  
  {-# OPTIONS_GHC -fno-warn-orphans  #-}
  
  module IHaskell.Display.Widgets.Style.ProgressStyle
    ( -- * Progress style
      ProgressStyle
      -- * Create a new progress style
    , mkProgressStyle
    ) where
  
  -- To keep `cabal repl` happy when running from the ihaskell repo
  import           Prelude
  
  import           Data.Aeson
  import           Data.IORef (newIORef)
  import           Data.Vinyl (Rec(..), (<+>))
  
  import           IHaskell.Display
  import           IHaskell.Eval.Widgets
  import           IHaskell.IPython.Message.UUID as U
  
  import           IHaskell.Display.Widgets.Types
  import           IHaskell.Display.Widgets.Common
  
  -- | A 'ProgressStyle' represents a Button Style from IPython.html.widgets.
  type ProgressStyle = IPythonWidget ProgressStyleType
  
  -- | Create a new button style
  mkProgressStyle :: IO ProgressStyle
  mkProgressStyle = do
    wid <- U.random
  
    let stl = defaultDescriptionStyleWidget "ProgressStyleModel"
        but = (F @BarColor =:: Nothing)
              :& RNil
        btnStlState = WidgetState (stl <+> but)
  
    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 ProgressStyle where
    getCommUUID = uuid
  