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-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.DynamicWorkspaces
-- Copyright : (c) David Roundy <droundy@darcs.net>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : David Roundy <droundy@darcs.net>
-- Stability : unstable
-- Portability : unportable
--
-- Provides bindings to add and delete workspaces. Note that you may only
-- delete a workspace that is already empty.
--
-----------------------------------------------------------------------------
module XMonadContrib.DynamicWorkspaces (
-- * Usage
-- $usage
addWorkspace, removeWorkspace,
selectWorkspace, renameWorkspace,
toNthWorkspace, withNthWorkspace
) where
import Control.Monad.State ( gets )
import Data.List ( sort )
import XMonad ( X, XState(..), Layout, WorkspaceId, WindowSet )
import Operations
import StackSet hiding (filter, modify, delete)
import Graphics.X11.Xlib ( Window )
import XMonadContrib.WorkspacePrompt
import XMonadContrib.XPrompt ( XPConfig )
-- $usage
-- You can use this module with the following in your Config.hs file:
--
-- > import XMonadContrib.DynamicWorkspaces
--
-- > , ((modMask .|. shiftMask, xK_n), selectWorkspace defaultXPConfig layoutHook)
-- > , ((modMask .|. shiftMask, xK_BackSpace), removeWorkspace)
-- > , ((modMask .|. shiftMask .|. controlMask, xK_r), renameWorkspace defaultXPConfig)
--
-- > -- mod-[1..9] %! Switch to workspace N
-- > -- mod-shift-[1..9] %! Move client to workspace N
-- > ++
-- > zip (zip (repeat modMask) [xK_1..xK_9]) (map (withNthWorkspace W.greedyView) [0..])
-- > ++
-- > zip (zip (repeat (modMask .|. shiftMask)) [xK_1..xK_9]) (map (withNthWorkspace W.shift) [0..])
allPossibleTags :: [WorkspaceId]
allPossibleTags = map (:"") ['0'..]
renameWorkspace :: XPConfig -> X ()
renameWorkspace conf = workspacePrompt conf $ \w ->
windows $ \s -> let sett wk = wk { tag = w }
setscr scr = scr { workspace = sett $ workspace scr }
sets q = q { current = setscr $ current q }
in sets $ removeWorkspace' w s
toNthWorkspace :: (String -> X ()) -> Int -> X ()
toNthWorkspace job wnum = do ws <- gets (sort . map tag . workspaces . windowset)
case drop wnum ws of
(w:_) -> job w
[] -> return ()
withNthWorkspace :: (String -> WindowSet -> WindowSet) -> Int -> X ()
withNthWorkspace job wnum = do ws <- gets (sort . map tag . workspaces . windowset)
case drop wnum ws of
(w:_) -> windows $ job w
[] -> return ()
selectWorkspace :: XPConfig -> Layout Window -> X ()
selectWorkspace conf l = workspacePrompt conf $ \w ->
windows $ \s -> if tagMember w s
then greedyView w s
else addWorkspace' w l s
addWorkspace :: Layout Window -> X ()
addWorkspace l = do s <- gets windowset
let newtag:_ = filter (not . (`tagMember` s)) allPossibleTags
windows (addWorkspace' newtag l)
removeWorkspace :: X ()
removeWorkspace = do s <- gets windowset
case s of
StackSet { current = Screen { workspace = torem }
, hidden = (w:_) }
-> do windows $ view (tag w)
windows (removeWorkspace' (tag torem))
_ -> return ()
addWorkspace' :: i -> l -> StackSet i l a sid sd -> StackSet i l a sid sd
addWorkspace' newtag l s@(StackSet { current = scr@(Screen { workspace = w })
, hidden = ws })
= s { current = scr { workspace = Workspace newtag l Nothing }
, hidden = w:ws }
removeWorkspace' :: (Eq i) => i -> StackSet i l a sid sd -> StackSet i l a sid sd
removeWorkspace' torem s@(StackSet { current = scr@(Screen { workspace = wc })
, hidden = (w:ws) })
| tag w == torem = s { current = scr { workspace = wc { stack = meld (stack w) (stack wc) } }
, hidden = ws }
where meld Nothing Nothing = Nothing
meld x Nothing = x
meld Nothing x = x
meld (Just x) (Just y) = differentiate (integrate x ++ integrate y)
removeWorkspace' _ s = s
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