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-----------------------------------------------------------------------------
-- |
-- Module      :  XMonad.Actions.PerConditionKeys
-- Copyright   :  (c) azahi 2018
-- License     :  BSD3-style (see LICENSE)
--
-- Maintainer  :  azahi@teknik.io
-- Stability   :  unstable
-- Portability :  unportable
--
------------------------------------------------------------------------

module XMonad.Actions.PerConditionKeys
    ( XCond(..)
    , chooseAction
    , bindOn
    ) where

import           Data.List
import           XMonad
import qualified XMonad.StackSet as S

data XCond = WS | LD

chooseAction :: XCond -> (String -> X ()) -> X ()
chooseAction WS f = withWindowSet (f . S.currentTag)
chooseAction LD f = withWindowSet (f . description . S.layout . S.workspace . S.current)

bindOn :: XCond -> [(String, X ())] -> X ()
bindOn xc bindings = chooseAction xc chooser
    where chooser x = case find ((x ==) . fst) bindings of
                           Just (_, action) -> action
                           Nothing          -> case find (("" ==) . fst) bindings of
                                                    Just (_, action) -> action
                                                    Nothing          -> return ()

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