xmonad-config/lib/Xmobar/Plugins/Bluetooth.hs

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{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
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--------------------------------------------------------------------------------
-- | Bluetooth plugin
--
-- Use the bluez interface on DBus to check status
module Xmobar.Plugins.Bluetooth
( Bluetooth(..)
, btAlias
, btBus
, btPath
) where
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import DBus
import DBus.Client
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import XMonad.Hooks.DynamicLog (xmobarColor)
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import Xmobar
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data Bluetooth = Bluetooth (String, String, String) Int
deriving (Read, Show)
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callGetPowered :: Client -> IO (Either MethodError Variant)
callGetPowered client =
getProperty client (methodCall btPath "org.bluez.Adapter1" "Powered")
{ methodCallDestination = Just btBus }
btBus :: BusName
btBus = "org.bluez"
-- TODO this feels like something that shouldn't be hardcoded
btPath :: ObjectPath
btPath = "/org/bluez/hci0"
btAlias :: String
btAlias = "bluetooth"
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instance Exec Bluetooth where
alias (Bluetooth _ _) = btAlias
rate (Bluetooth _ r) = r
run (Bluetooth (text, colorOn, colorOff) _) = do
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client <- connectSystem
reply <- callGetPowered client
disconnect client
return $ fmtState $ procReply reply
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where
procReply = \case
-- TODO handle errors?
Right r -> fromVariant r
Left _ -> Nothing
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fmtState = \case
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Just s -> xmobarColor (if s then colorOn else colorOff) "" text
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Nothing -> "N/A"