diff options
Diffstat (limited to 'XMonad.hs')
| -rw-r--r-- | XMonad.hs | 35 |
1 files changed, 31 insertions, 4 deletions
@@ -18,7 +18,7 @@ module XMonad ( X, WindowSet, WorkspaceId(..), ScreenId(..), XState(..), XConf(..), Layout(..), Typeable, Message, SomeMessage(..), fromMessage, - runX, io, withDisplay, isRoot, spawn, trace, whenJust + runX, io, withDisplay, withWorkspace, isRoot, spawn, restart, trace, whenJust, whenX ) where import StackSet (StackSet) @@ -28,6 +28,8 @@ import Control.Monad.Reader import System.IO import System.Posix.Process (executeFile, forkProcess, getProcessStatus, createSession) import System.Exit +import System.Environment +import System.Directory import Graphics.X11.Xlib import Data.Typeable @@ -53,7 +55,7 @@ data XConf = XConf , normalBorder :: !Color -- ^ border color of unfocused windows , focusedBorder :: !Color } -- ^ border color of the focused window -type WindowSet = StackSet WorkspaceId ScreenId Window +type WindowSet = StackSet WorkspaceId Window ScreenId -- | Virtual workspace indicies newtype WorkspaceId = W Int deriving (Eq,Ord,Show,Enum,Num,Integral,Real) @@ -85,6 +87,10 @@ runX c st (X a) = runStateT (runReaderT a c) st >> return () withDisplay :: (Display -> X ()) -> X () withDisplay f = asks display >>= f +-- | Run a monadic action with the current workspace +withWorkspace :: (WindowSet -> X a) -> X a +withWorkspace f = gets workspace >>= f + -- | True if the given window is the root window isRoot :: Window -> X Bool isRoot w = liftM (w==) (asks theRoot) @@ -119,12 +125,11 @@ fromMessage :: Message m => SomeMessage -> Maybe m fromMessage (SomeMessage m) = cast m -- --------------------------------------------------------------------- --- Utilities +-- General utilities -- | Lift an IO action into the X monad io :: IO a -> X a io = liftIO -{-# INLINE io #-} -- | spawn. Launch an external application spawn :: String -> X () @@ -136,10 +141,32 @@ spawn x = io $ do getProcessStatus True False pid return () +-- | Restart xmonad by exec()'ing self. This doesn't save state and xmonad has +-- to be in PATH for this to work. +restart :: IO () +restart = do + prog <- getProgName + prog_path <- findExecutable prog + case prog_path of + Nothing -> return () -- silently fail + Just p -> do args <- getArgs + executeFile p True args Nothing + -- | Run a side effecting action with the current workspace. Like 'when' but whenJust :: Maybe a -> (a -> X ()) -> X () whenJust mg f = maybe (return ()) f mg +-- | Conditionally run an action, using a X event to decide +whenX :: X Bool -> X () -> X () +whenX a f = a >>= \b -> when b f + +-- | Grab the X server (lock it) from the X monad +-- withServerX :: X () -> X () +-- withServerX f = withDisplay $ \dpy -> do +-- io $ grabServer dpy +-- f +-- io $ ungrabServer dpy + -- | A 'trace' for the X monad. Logs a string to stderr. The result may -- be found in your .xsession-errors file trace :: String -> X () |