74 lines
2.2 KiB
Haskell
74 lines
2.2 KiB
Haskell
module Xmobar.Plugins.Device
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( Device(..)
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, devDep
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) where
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--------------------------------------------------------------------------------
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-- | Devince plugin
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--
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-- Display different text depending on whether or not the interface has
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-- connectivity
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import Control.Monad
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import Data.Word
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import DBus
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import DBus.Client
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import DBus.Internal
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import XMonad.Internal.Dependency
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import Xmobar
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import Xmobar.Plugins.Common
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newtype Device = Device (String, String, Colors) deriving (Read, Show)
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nmBus :: BusName
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nmBus = busName_ "org.freedesktop.NetworkManager"
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nmPath :: ObjectPath
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nmPath = objectPath_ "/org/freedesktop/NetworkManager"
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nmInterface :: InterfaceName
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nmInterface = interfaceName_ "org.freedesktop.NetworkManager"
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nmDeviceInterface :: InterfaceName
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nmDeviceInterface = interfaceName_ "org.freedesktop.NetworkManager.Device"
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getByIP :: MemberName
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getByIP = memberName_ "GetDeviceByIpIface"
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devSignal :: String
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devSignal = "Ip4Connectivity"
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devDep :: DBusDependency_
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devDep = Endpoint nmBus nmPath nmInterface $ Method_ getByIP
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getDevice :: Client -> String -> IO (Maybe ObjectPath)
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getDevice client iface = bodyToMaybe <$> callMethod' client mc
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where
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mc = (methodCallBus nmBus nmPath nmInterface getByIP)
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{ methodCallBody = [toVariant iface]
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}
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getDeviceConnected :: ObjectPath -> Client -> IO [Variant]
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getDeviceConnected path = callPropertyGet nmBus path nmDeviceInterface
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$ memberName_ devSignal
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matchStatus :: [Variant] -> SignalMatch Word32
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matchStatus = matchPropertyChanged nmDeviceInterface devSignal
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instance Exec Device where
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alias (Device (iface, _, _)) = iface
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start (Device (iface, text, colors)) cb = do
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withDBusClientConnection True cb $ \client -> do
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path <- getDevice client iface
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displayMaybe' cb (listener client) path
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where
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listener client path = do
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rule <- matchPropertyFull client nmBus (Just path)
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-- TODO warn the user here rather than silently drop the listener
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forM_ rule $ \r ->
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startListener r (getDeviceConnected path) matchStatus chooseColor' cb client
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chooseColor' = return . (\s -> colorText colors s text) . (> 1)
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