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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.FocusNth
-- Copyright : (c) Karsten Schoelzel <kuser@gmx.de>
-- License : BSD
--
-- Maintainer : Karsten Schoelzel <kuser@gmx.de>
-- Stability : unstable
-- Portability : unportable
--
-- Focus the n'th window on the screen.
-----------------------------------------------------------------------------
module XMonadContrib.FocusNth (
-- * Usage
-- $usage
focusNth) where
import StackSet
import Operations
import XMonad
-- $usage
-- > import XMonadContrib.FocusNth
-- > -- mod4-[1..9] @@ Switch to window N
-- > ++ [((mod4Mask, k), focusNth i)
-- > | (i, k) <- zip [0 .. 8] [xK_1 ..]]
focusNth :: Int -> X ()
focusNth = windows . modify' . focusNth'
focusNth' :: Int -> Stack a -> Stack a
focusNth' n s@(Stack _ ls rs) | (n < 0) || (n > length(ls) + length(rs)) = s
| otherwise = listToStack n (integrate s)
listToStack :: Int -> [a] -> Stack a
listToStack n l = Stack t ls rs
where (t:rs) = drop n l
ls = reverse (take n l)
|
