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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.WindowProperties
-- Copyright : (c) Roman Cheplyaka
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Roman Cheplyaka <roma@ro-che.info>
-- Stability : unstable
-- Portability : unportable
--
-- EDSL for specifying window properties, such as title, classname or resource.
--
-----------------------------------------------------------------------------
module XMonad.Util.WindowProperties (
-- * Usage
-- $usage
Property(..), hasProperty)
where
import XMonad
-- $usage
-- This module allows to specify window properties, such as title, classname or
-- resource, and to check them.
--
-- In contrast to ManageHook properties, these are instances of Show and Read,
-- so they can be used in layout definitions etc. For example usage see "XMonad.Layout.IM"
-- | Property constructors are quite self-explaining.
data Property = Title String
| ClassName String
| Resource String
| And Property Property
| Or Property Property
| Not Property
| Const Bool
deriving (Read, Show)
infixr 9 `And`
infixr 8 `Or`
-- | Does given window have this property?
hasProperty :: Property -> Window -> X Bool
hasProperty (Title s) w = withDisplay $ \d -> fmap (Just s ==) $ io $ fetchName d w
hasProperty (Resource s) w = withDisplay $ \d -> fmap ((==) s . resName ) $ io $ getClassHint d w
hasProperty (ClassName s) w = withDisplay $ \d -> fmap ((==) s . resClass) $ io $ getClassHint d w
hasProperty (And p1 p2) w = do { r1 <- hasProperty p1 w; r2 <- hasProperty p2 w; return $ r1 && r2 }
hasProperty (Or p1 p2) w = do { r1 <- hasProperty p1 w; r2 <- hasProperty p2 w; return $ r1 || r2 }
hasProperty (Not p1) w = do { r1 <- hasProperty p1 w; return $ not r1 }
hasProperty (Const b) _ = return b
|
