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X.A.WindowNavigation: implement swap, extract withTargetWindow commonality

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Why doesn't mapWindows exist already?
This commit is contained in:
Devin Mullins 2008-05-12 06:47:15 +00:00
parent cdeb842834
commit 70caa5a67b
1 changed files with 29 additions and 12 deletions
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35
XMonad/Actions/WindowNavigation.hs
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@ -43,6 +43,7 @@ import Graphics.X11.Xlib
-- Don't use it! What, are you crazy?
-- TODO:
-- - 1. 2x2, top right; 2. a,j,d 3. error!
-- - implement swap
-- - cleanup
-- - documentation :)
@ -56,7 +57,11 @@ withWindowNavigation (u,l,d,r) conf =
withWindowNavigationKeys [ ((modMask conf , u), WNGo U),
((modMask conf , l), WNGo L),
((modMask conf , d), WNGo D),
((modMask conf, r), WNGo R) ]
((modMask conf , r), WNGo R),
((modMask conf .|. shiftMask, u), WNSwap U),
((modMask conf .|. shiftMask, l), WNSwap L),
((modMask conf .|. shiftMask, d), WNSwap D),
((modMask conf .|. shiftMask, r), WNSwap R) ]
conf
withWindowNavigationKeys :: [((KeyMask, KeySym), WNAction)] -> XConfig l -> IO (XConfig l)
@ -77,16 +82,28 @@ type WNState = Map WorkspaceId Point
-- 3. focus window
-- 4. set new position
go :: IORef WNState -> Direction -> X ()
go posRef dir = fromCurrentPoint $ \win pos -> do
targets <- filter ((/= win) . fst) <$> navigableTargets pos dir
whenJust (listToMaybe targets) $ \(tw, tr) -> do
windows (W.focusWindow tw)
setPosition posRef pos tr
where fromCurrentPoint f = withFocused $ \win -> do
currentPosition posRef >>= f win
go = withTargetWindow W.focusWindow
swap :: IORef WNState -> Direction -> X ()
swap _ _ = return ()
swap = withTargetWindow swapWithFocused
where swapWithFocused targetWin winSet =
case W.peek winSet of
Just currentWin -> W.focusWindow currentWin $
mapWindows (swapWin currentWin targetWin) winSet
Nothing -> winSet
mapWindows f ss = W.mapWorkspace (mapWindows' f) ss
mapWindows' f ws@(W.Workspace { W.stack = s }) = ws { W.stack = mapWindows'' f <$> s }
mapWindows'' f (W.Stack focused up down) = W.Stack (f focused) (map f up) (map f down)
swapWin win1 win2 win = if win == win1 then win2 else if win == win2 then win1 else win
withTargetWindow :: (Window -> WindowSet -> WindowSet) -> IORef WNState -> Direction -> X ()
withTargetWindow adj posRef dir = fromCurrentPoint $ \win pos -> do
targets <- filter ((/= win) . fst) <$> navigableTargets pos dir
whenJust (listToMaybe targets) $ \(targetWin, targetRect) -> do
windows (adj targetWin)
setPosition posRef pos targetRect
where fromCurrentPoint f = withFocused $ \win -> do
currentPosition posRef >>= f win
-- Gets the current position from the IORef passed in, or if nothing (say, from
-- a restart), derives the current position from the current window. Also,