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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.Dmenu
-- Copyright : (c) Spencer Janssen <sjanssen@cse.unl.edu>
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Spencer Janssen <sjanssen@cse.unl.edu>
-- Stability : unstable
-- Portability : unportable
--
-- A convenient binding to dmenu.
--
-----------------------------------------------------------------------------
module XMonadContrib.Dmenu (
-- * Usage
-- $usage
dmenu, dmenuXinerama, dmenuMap,
runProcessWithInput
) where
import XMonad
import qualified StackSet as W
import qualified Data.Map as M
import System.Process
import System.IO
import Control.Monad.State
-- $usage
-- You can use this module with the following in your Config.hs file:
--
-- > import XMonadContrib.Dmenu
-- %import XMonadContrib.Dmenu
-- | Returns Just output if the command succeeded, and Nothing if it didn't.
-- This corresponds to dmenu's notion of exit code 1 for a cancelled invocation.
runProcessWithInput :: FilePath -> [String] -> String -> IO String
runProcessWithInput cmd args input = do
(pin, pout, perr, ph) <- runInteractiveProcess cmd args Nothing Nothing
hPutStr pin input
hClose pin
output <- hGetContents pout
when (output==output) $ return ()
hClose pout
hClose perr
waitForProcess ph
return output
-- | Starts dmenu on the current screen. Requires this patch to dmenu:
-- <http://www.jcreigh.com/dmenu/dmenu-3.2-xinerama.patch>
dmenuXinerama :: [String] -> X String
dmenuXinerama opts = do
curscreen <- (fromIntegral . W.screen . W.current) `liftM` gets windowset :: X Int
io $ runProcessWithInput "dmenu" ["-xs", show (curscreen+1)] (unlines opts)
dmenu :: [String] -> X String
dmenu opts = io $ runProcessWithInput "dmenu" [] (unlines opts)
dmenuMap :: M.Map String a -> X (Maybe a)
dmenuMap selectionMap = do
selection <- dmenu (M.keys selectionMap)
return $ M.lookup selection selectionMap
|
