76 lines
2.0 KiB
Haskell
76 lines
2.0 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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module Xmobar.Plugins.Common
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( colorText
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, startListener
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, procSignalMatch
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, na
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, fromSingletonVariant
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, withDBusClientConnection
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, Callback
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, Colors (..)
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, displayMaybe
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, displayMaybe'
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, xmobarFGColor
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)
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where
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import DBus
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import DBus.Client
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import Data.Internal.DBus
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import RIO
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import qualified RIO.Text as T
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import XMonad.Hooks.DynamicLog (xmobarColor)
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-- use string here since all the callbacks in xmobar use strings :(
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type Callback = String -> IO ()
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data Colors = Colors
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{ colorsOn :: T.Text
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, colorsOff :: T.Text
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}
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deriving (Eq, Show, Read)
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startListener
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:: (MonadUnliftIO m, SafeClient c, IsVariant a)
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=> MatchRule
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-> (c -> m [Variant])
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-> ([Variant] -> SignalMatch a)
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-> (a -> m T.Text)
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-> Callback
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-> c
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-> m ()
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startListener rule getProp fromSignal toColor cb client = do
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reply <- getProp client
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displayMaybe cb toColor $ fromSingletonVariant reply
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void $ addMatchCallback rule (procMatch . fromSignal) client
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where
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procMatch = procSignalMatch cb toColor
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procSignalMatch
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:: MonadUnliftIO m => Callback -> (a -> m T.Text) -> SignalMatch a -> m ()
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procSignalMatch cb f = withSignalMatch (displayMaybe cb f)
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colorText :: Colors -> Bool -> T.Text -> T.Text
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colorText Colors {colorsOn = c} True = xmobarFGColor c
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colorText Colors {colorsOff = c} False = xmobarFGColor c
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xmobarFGColor :: T.Text -> T.Text -> T.Text
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xmobarFGColor c = T.pack . xmobarColor (T.unpack c) "" . T.unpack
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na :: T.Text
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na = "N/A"
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displayMaybe :: MonadUnliftIO m => Callback -> (a -> m T.Text) -> Maybe a -> m ()
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displayMaybe cb f = (liftIO . cb . T.unpack) <=< maybe (return na) f
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displayMaybe' :: MonadUnliftIO m => Callback -> (a -> m ()) -> Maybe a -> m ()
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displayMaybe' cb = maybe (liftIO $ cb $ T.unpack na)
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withDBusClientConnection
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:: (MonadUnliftIO m, SafeClient c)
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=> Callback
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-> (c -> RIO SimpleApp ())
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-> m ()
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withDBusClientConnection cb f = runSimpleApp $ displayMaybe' cb f =<< getDBusClient
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