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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Actions.SpawnOn
-- Copyright : (c) Spencer Janssen
-- License : BSD
--
-- Maintainer : Spencer Janssen <spencerjanssen@gmail.com>
-- Stability : unstable
-- Portability : unportable
--
-- This module provides helper functions to be used in @manageHook@. Here's
-- how you might use this:
--
-- > import XMonad.Hooks.ManageHelpers
-- > main = do
-- > sp <- mkSpawner
-- > xmonad defaultConfig {
-- > ...
-- > manageHook = spawnHook sp <+> manageHook defaultConfig
-- > ...
-- > }
module XMonad.Actions.SpawnOn (
Spawner,
mkSpawner,
manageSpawn,
spawnHere,
spawnOn,
shellPromptHere,
shellPromptOn
) where
import Data.IORef
import System.Posix.Types (ProcessID)
import XMonad
import qualified XMonad.StackSet as W
import XMonad.Hooks.ManageHelpers
import XMonad.Prompt
import XMonad.Prompt.Shell
newtype Spawner = Spawner {pidsRef :: IORef [(ProcessID, WorkspaceId)]}
maxPids :: Int
maxPids = 5
mkSpawner :: (Functor m, MonadIO m) => m Spawner
mkSpawner = io . fmap Spawner $ newIORef []
manageSpawn :: Spawner -> ManageHook
manageSpawn sp = do
pids <- io . readIORef $ pidsRef sp
mp <- pid
case flip lookup pids =<< mp of
Just w -> doF (W.shift w)
Nothing -> doF id
mkPrompt :: (String -> X ()) -> XPConfig -> X ()
mkPrompt cb c = do
cmds <- io $ getCommands
mkXPrompt Shell c (getShellCompl cmds) cb
shellPromptHere :: Spawner -> XPConfig -> X ()
shellPromptHere sp = mkPrompt (spawnHere sp)
shellPromptOn :: Spawner -> WorkspaceId -> XPConfig -> X ()
shellPromptOn sp ws = mkPrompt (spawnOn sp ws)
spawnHere :: Spawner -> String -> X ()
spawnHere sp cmd = withWindowSet $ \ws -> spawnOn sp (currTag ws) cmd
where currTag = W.tag . W.workspace . W.current
spawnOn :: Spawner -> WorkspaceId -> String -> X ()
spawnOn sp ws cmd = do
p <- spawnPID cmd
io $ modifyIORef (pidsRef sp) (take maxPids . ((p, ws) :))
|
