From eb5addb90f58ed0aa7e6f504fa2c960dd8228b1e Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 11 Sep 2013 19:14:25 +0200
Subject: Rename XMonad to MetaTile

---
 MetaTile/ManageHook.hs | 115 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 MetaTile/ManageHook.hs

(limited to 'MetaTile/ManageHook.hs')

diff --git a/MetaTile/ManageHook.hs b/MetaTile/ManageHook.hs
new file mode 100644
index 0000000..f2daf9c
--- /dev/null
+++ b/MetaTile/ManageHook.hs
@@ -0,0 +1,115 @@
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  MetaTile.ManageHook
+-- Copyright   :  (c) Spencer Janssen 2007
+-- License     :  BSD3-style (see LICENSE)
+--
+-- Maintainer  :  spencerjanssen@gmail.com
+-- Stability   :  unstable
+-- Portability :  not portable, uses cunning newtype deriving
+--
+-- An EDSL for ManageHooks
+--
+-----------------------------------------------------------------------------
+
+-- XXX examples required
+
+module MetaTile.ManageHook where
+
+import Prelude hiding (catch)
+import MetaTile.Core
+import Graphics.X11.Xlib.Extras
+import Graphics.X11.Xlib (Display, Window, internAtom, wM_NAME)
+import Control.Exception.Extensible (bracket, catch, SomeException(..))
+import Control.Monad.Reader
+import Data.Maybe
+import Data.Monoid
+import qualified MetaTile.StackSet as W
+import MetaTile.Operations (reveal)
+
+-- | Lift an 'X' action to a 'Query'.
+liftX :: X a -> Query a
+liftX = Query . lift
+
+-- | The identity hook that returns the WindowSet unchanged.
+idHook :: Monoid m => m
+idHook = mempty
+
+-- | Infix 'mappend'. Compose two 'ManageHook' from right to left.
+(<+>) :: Monoid m => m -> m -> m
+(<+>) = mappend
+
+-- | Compose the list of 'ManageHook's.
+composeAll :: Monoid m => [m] -> m
+composeAll = mconcat
+
+infix 0 -->
+
+-- | @p --> x@.  If @p@ returns 'True', execute the 'ManageHook'.
+--
+-- > (-->) :: Monoid m => Query Bool -> Query m -> Query m -- a simpler type
+(-->) :: (Monad m, Monoid a) => m Bool -> m a -> m a
+p --> f = p >>= \b -> if b then f else return mempty
+
+-- | @q =? x@. if the result of @q@ equals @x@, return 'True'.
+(=?) :: Eq a => Query a -> a -> Query Bool
+q =? x = fmap (== x) q
+
+infixr 3 <&&>, <||>
+
+-- | '&&' lifted to a 'Monad'.
+(<&&>) :: Monad m => m Bool -> m Bool -> m Bool
+(<&&>) = liftM2 (&&)
+
+-- | '||' lifted to a 'Monad'.
+(<||>) :: Monad m => m Bool -> m Bool -> m Bool
+(<||>) = liftM2 (||)
+
+-- | Return the window title.
+title :: Query String
+title = ask >>= \w -> liftX $ do
+    d <- asks display
+    let
+        getProp =
+            (internAtom d "_NET_WM_NAME" False >>= getTextProperty d w)
+                `catch` \(SomeException _) -> getTextProperty d w wM_NAME
+        extract prop = do l <- wcTextPropertyToTextList d prop
+                          return $ if null l then "" else head l
+    io $ bracket getProp (xFree . tp_value) extract `catch` \(SomeException _) -> return ""
+
+-- | Return the application name.
+appName :: Query String
+appName = ask >>= (\w -> liftX $ withDisplay $ \d -> fmap resName $ io $ getClassHint d w)
+
+-- | Backwards compatible alias for 'appName'.
+resource :: Query String
+resource = appName
+
+-- | Return the resource class.
+className :: Query String
+className = ask >>= (\w -> liftX $ withDisplay $ \d -> fmap resClass $ io $ getClassHint d w)
+
+-- | A query that can return an arbitrary X property of type 'String',
+--   identified by name.
+stringProperty :: String -> Query String
+stringProperty p = ask >>= (\w -> liftX $ withDisplay $ \d -> fmap (fromMaybe "") $ getStringProperty d w p)
+
+getStringProperty :: Display -> Window -> String -> X (Maybe String)
+getStringProperty d w p = do
+  a  <- getAtom p
+  md <- io $ getWindowProperty8 d a w
+  return $ fmap (map (toEnum . fromIntegral)) md
+
+-- | Modify the 'WindowSet' with a pure function.
+doF :: (s -> s) -> Query (Endo s)
+doF = return . Endo
+
+-- | Map the window and remove it from the 'WindowSet'.
+doIgnore :: ManageHook
+doIgnore = ask >>= \w -> liftX (reveal w) >> doF (W.delete w)
+
+-- | Move the window to a given workspace
+doShift :: WorkspaceId -> ManageHook
+doShift i = doF . W.shiftWin i =<< ask
-- 
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