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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Util.NamedWindows
-- Copyright : (c) David Roundy <droundy@darcs.net>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : none
-- Stability : unstable
-- Portability : unportable
--
-- This module allows you to associate the X titles of windows with
-- them.
--
-----------------------------------------------------------------------------
module XMonad.Util.NamedWindows (
-- * Usage
-- $usage
NamedWindow,
getName,
withNamedWindow,
unName
) where
import Control.Applicative ( (<$>) )
import Control.Exception.Extensible as E
import Data.Maybe ( fromMaybe, listToMaybe )
import qualified XMonad.StackSet as W ( peek )
import XMonad
-- $usage
-- See "XMonad.Layout.Tabbed" for an example of its use.
data NamedWindow = NW !String !Window
instance Eq NamedWindow where
(NW s _) == (NW s' _) = s == s'
instance Ord NamedWindow where
compare (NW s _) (NW s' _) = compare s s'
instance Show NamedWindow where
show (NW n _) = n
getName :: Window -> X NamedWindow
getName w = withDisplay $ \d -> do
-- TODO, this code is ugly and convoluted -- clean it up
let getIt = bracket getProp (xFree . tp_value) (fmap (`NW` w) . copy)
getProp = (internAtom d "_NET_WM_NAME" False >>= getTextProperty d w)
`E.catch` \(SomeException _) -> getTextProperty d w wM_NAME
copy prop = fromMaybe "" . listToMaybe <$> wcTextPropertyToTextList d prop
io $ getIt `E.catch` \(SomeException _) -> ((`NW` w) . resName) `fmap` getClassHint d w
unName :: NamedWindow -> Window
unName (NW _ w) = w
withNamedWindow :: (NamedWindow -> X ()) -> X ()
withNamedWindow f = do ws <- gets windowset
whenJust (W.peek ws) $ \w -> getName w >>= f
|
