93 lines
2.8 KiB
Haskell
93 lines
2.8 KiB
Haskell
--------------------------------------------------------------------------------
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-- | Module for monitoring removable drive events
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--
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-- Currently, its only purpose is to play Super Mario sounds when a drive is
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-- inserted or removed. Why? Because I can.
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module XMonad.Internal.Concurrent.Removable (runRemovableMon) where
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import Control.Concurrent
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import Control.Monad
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import Data.Map.Lazy (Map, member)
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import DBus
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import DBus.Client
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-- import XMonad.Internal.DBus.Control (pathExists)
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import XMonad.Internal.Command.Desktop
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import XMonad.Internal.Dependency
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bus :: BusName
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bus = busName_ "org.freedesktop.UDisks2"
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path :: ObjectPath
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path = objectPath_ "/org/freedesktop/UDisks2"
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interface :: InterfaceName
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interface = interfaceName_ "org.freedesktop.DBus.ObjectManager"
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memAdded :: MemberName
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memAdded = memberName_ "InterfacesAdded"
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memRemoved :: MemberName
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memRemoved = memberName_ "InterfacesRemoved"
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dbusDep :: MemberName -> DBusDep
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dbusDep m = Endpoint bus path interface $ Signal_ m
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addedDep :: DBusDep
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addedDep = dbusDep memAdded
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removedDep :: DBusDep
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removedDep = dbusDep memRemoved
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driveInsertedSound :: FilePath
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driveInsertedSound = "smb_powerup.wav"
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driveRemovedSound :: FilePath
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driveRemovedSound = "smb_pipe.wav"
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ruleUdisks :: MatchRule
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ruleUdisks = matchAny
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{ matchPath = Just path
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, matchInterface = Just interface
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}
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driveFlag :: String
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driveFlag = "org.freedesktop.UDisks2.Drive"
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addedHasDrive :: [Variant] -> Bool
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addedHasDrive [_, a] = maybe False (member driveFlag)
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(fromVariant a :: Maybe (Map String (Map String Variant)))
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addedHasDrive _ = False
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removedHasDrive :: [Variant] -> Bool
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removedHasDrive [_, a] = maybe False (driveFlag `elem`)
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(fromVariant a :: Maybe [String])
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removedHasDrive _ = False
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playSoundMaybe :: FilePath -> Bool -> IO ()
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playSoundMaybe p b = when b $ playSound p
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-- NOTE: the udisks2 service should be already running for this module to work.
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-- If it not already, we won't see any signals from the dbus until it is
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-- started (it will work after it is started however). It seems safe to simply
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-- enable the udisks2 service at boot; however this is not default behavior.
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listenDevices :: IO ()
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listenDevices = do
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client <- connectSystem
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_ <- addMatch' client memAdded driveInsertedSound addedHasDrive
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_ <- addMatch' client memRemoved driveRemovedSound removedHasDrive
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forever (threadDelay 5000000)
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where
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addMatch' client m p f = addMatch client ruleUdisks { matchMember = Just m }
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$ playSoundMaybe p . f . signalBody
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runRemovableMon :: Maybe Client -> FeatureIO
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runRemovableMon client = Feature
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{ ftrAction = DBusTree (Single (const listenDevices)) client [addedDep, removedDep] []
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, ftrName = "removeable device monitor"
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, ftrWarning = Default
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}
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