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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Actions.CycleWS
-- Copyright : (c) Joachim Breitner <mail@joachim-breitner.de>,
-- Nelson Elhage <nelhage@mit.edu> (`toggleWS' function)
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : Joachim Breitner <mail@joachim-breitner.de>
-- Stability : unstable
-- Portability : unportable
--
-- Provides bindings to cycle forward or backward through the list
-- of workspaces, and to move windows there.
--
-----------------------------------------------------------------------------
module XMonad.Actions.CycleWS (
-- * Usage
-- $usage
nextWS,
prevWS,
shiftToNext,
shiftToPrev,
toggleWS,
) where
import Control.Monad.Reader ( asks )
import Control.Monad.State ( gets )
import Data.List ( sortBy, findIndex )
import Data.Maybe ( fromMaybe )
import Data.Ord ( comparing )
import XMonad hiding (workspaces)
import qualified XMonad (workspaces)
import XMonad.StackSet hiding (filter)
import XMonad.Operations
-- $usage
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@ file:
--
-- > import XMonad.Actions.CycleWS
--
-- > , ((modMask, xK_Right), nextWS)
-- > , ((modMask, xK_Left), prevWS)
-- > , ((modMask .|. shiftMask, xK_Right), shiftToNext)
-- > , ((modMask .|. shiftMask, xK_Left), shiftToPrev)
-- > , ((modMask, xK_t), toggleWS)
--
-- If you want to follow the moved window, you can use both actions:
--
-- > , ((modMask .|. shiftMask, xK_Right), shiftToNext >> nextWS)
-- > , ((modMask .|. shiftMask, xK_Left), shiftToPrev >> prevWS)
--
-- For detailed instructions on editing your key bindings, see
-- "XMonad.Doc.Extending#Editing_key_bindings".
-- | Switch to next workspace
nextWS :: X ()
nextWS = switchWorkspace 1
-- | Switch to previous workspace
prevWS :: X ()
prevWS = switchWorkspace (-1)
-- | Move focused window to next workspace
shiftToNext :: X ()
shiftToNext = shiftBy 1
-- | Move focused window to previous workspace
shiftToPrev :: X ()
shiftToPrev = shiftBy (-1)
-- | Toggle to the workspace displayed previously
toggleWS :: X ()
toggleWS = windows $ view =<< tag . head . hidden
switchWorkspace :: Int -> X ()
switchWorkspace d = wsBy d >>= windows . greedyView
shiftBy :: Int -> X ()
shiftBy d = wsBy d >>= windows . shift
wsBy :: Int -> X (WorkspaceId)
wsBy d = do
ws <- gets windowset
spaces <- asks (XMonad.workspaces . config)
let orderedWs = sortBy (comparing (wsIndex spaces)) (workspaces ws)
let now = fromMaybe 0 $ findWsIndex (workspace (current ws)) orderedWs
let next = orderedWs !! ((now + d) `mod` length orderedWs)
return $ tag next
wsIndex :: [WorkspaceId] -> WindowSpace -> Maybe Int
wsIndex spaces ws = findIndex (== tag ws) spaces
findWsIndex :: WindowSpace -> [WindowSpace] -> Maybe Int
findWsIndex ws wss = findIndex ((== tag ws) . tag) wss
|
