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-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Util.WorkspaceCompare
-- Copyright : (c) Spencer Janssen <sjanssen@cse.unl.edu>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : Spencer Janssen <sjanssen@cse.unl.edu>
-- Stability : unstable
-- Portability : unportable
--
module XMonad.Util.WorkspaceCompare ( getWsIndex, getWsCompare, getSortByTag ) where
import XMonad
import qualified XMonad.StackSet as S
import Data.List
import Data.Monoid
getWsIndex :: X (WorkspaceId -> Maybe Int)
getWsIndex = do
spaces <- asks (workspaces . config)
return $ flip elemIndex spaces
getWsCompare :: X (WorkspaceId -> WorkspaceId -> Ordering)
getWsCompare = do
wsIndex <- getWsIndex
return $ \a b -> f (wsIndex a) (wsIndex b) `mappend` compare a b
where
f Nothing Nothing = EQ
f (Just _) Nothing = LT
f Nothing (Just _) = GT
f (Just x) (Just y) = compare x y
getSortByTag :: X ([WindowSpace] -> [WindowSpace])
getSortByTag = do
cmp <- getWsCompare
return $ sortBy (\a b -> cmp (S.tag a) (S.tag b))
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