84 lines
2.6 KiB
Haskell
84 lines
2.6 KiB
Haskell
{-# LANGUAGE ScopedTypeVariables #-}
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--------------------------------------------------------------------------------
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-- | High-level interface for managing XMonad's DBus
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module XMonad.Internal.DBus.Control
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( Client
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, DBusState(..)
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, connectDBus
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, connectDBusX
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, disconnectDBus
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, disconnectDBusX
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, getDBusClient
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, withDBusClient
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, withDBusClient_
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, disconnect
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, dbusExporters
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) where
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import Control.Monad
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import DBus
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import DBus.Client
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import XMonad.Internal.DBus.Brightness.ClevoKeyboard
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import XMonad.Internal.DBus.Brightness.IntelBacklight
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import XMonad.Internal.DBus.Common
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import XMonad.Internal.DBus.Screensaver
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import XMonad.Internal.Dependency
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-- | Current connections to the DBus (session and system buses)
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data DBusState = DBusState
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{ dbSesClient :: Maybe SesClient
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, dbSysClient :: Maybe SysClient
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}
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-- | Connect to the DBus
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connectDBus :: IO DBusState
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connectDBus = do
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ses <- getDBusClient
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sys <- getDBusClient
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return DBusState { dbSesClient = ses, dbSysClient = sys }
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-- TODO why is this only the session client?
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-- | Disconnect from the DBus
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disconnectDBus :: DBusState -> IO ()
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disconnectDBus db = forM_ (toClient <$> dbSysClient db) disconnect
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-- | Connect to the DBus and request the XMonad name
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connectDBusX :: IO DBusState
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connectDBusX = do
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db <- connectDBus
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forM_ (toClient <$> dbSesClient db) requestXMonadName
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return db
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-- | Disconnect from DBus and release the XMonad name
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disconnectDBusX :: DBusState -> IO ()
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disconnectDBusX db = do
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forM_ (toClient <$> dbSesClient db) releaseXMonadName
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disconnectDBus db
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-- | All exporter features to be assigned to the DBus
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dbusExporters :: [Maybe SesClient -> SometimesIO]
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dbusExporters = [exportScreensaver, exportIntelBacklight, exportClevoKeyboard]
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releaseXMonadName :: Client -> IO ()
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releaseXMonadName cl = void $ releaseName cl xmonadBusName
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requestXMonadName :: Client -> IO ()
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requestXMonadName client = do
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res <- requestName client xmonadBusName []
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-- TODO if the client is not released on shutdown the owner will be different
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let msg | res == NamePrimaryOwner = Nothing
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| res == NameAlreadyOwner = Just $ "this process already owns " ++ xn
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| res == NameInQueue
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|| res == NameExists = Just $ "another process owns " ++ xn
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| otherwise = Just $ "unknown error when requesting " ++ xn
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forM_ msg putStrLn
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where
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xn = "'" ++ formatBusName xmonadBusName ++ "'"
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-- executeExporters :: Maybe Client -> IO ()
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-- executeExporters cl = mapM_ (\f -> executeSometimes $ f cl) dbusExporters
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