summaryrefslogtreecommitdiffstats
path: root/tv/5pkgs/xmonad-tv/Util/Shutdown.hs
diff options
context:
space:
mode:
authortv <tv@shackspace.de>2015-10-29 01:49:27 +0100
committertv <tv@shackspace.de>2015-10-29 01:49:27 +0100
commitbcaf3771d9503f1b0d01a2c15ca0712ee454342f (patch)
treef5827da74911ccbe14ab5c24d1ca2aea5dcb0df1 /tv/5pkgs/xmonad-tv/Util/Shutdown.hs
parent43d3116dc08aefd2ce008b9905811b8d92d88fac (diff)
tv: {2configs/xserver => 5pkgs}/xmonad-tv
Diffstat (limited to 'tv/5pkgs/xmonad-tv/Util/Shutdown.hs')
-rw-r--r--tv/5pkgs/xmonad-tv/Util/Shutdown.hs53
1 files changed, 53 insertions, 0 deletions
diff --git a/tv/5pkgs/xmonad-tv/Util/Shutdown.hs b/tv/5pkgs/xmonad-tv/Util/Shutdown.hs
new file mode 100644
index 000000000..89e22b4e7
--- /dev/null
+++ b/tv/5pkgs/xmonad-tv/Util/Shutdown.hs
@@ -0,0 +1,53 @@
+{-# LANGUAGE LambdaCase #-}
+module Util.Shutdown
+ ( sendShutdownEvent
+ , handleShutdownEvent
+ , shutdown
+ )
+ where
+
+import Control.Monad
+import Data.Monoid
+import Data.Maybe (catMaybes)
+import qualified Data.Map as Map
+import System.Environment (getEnv)
+import System.Exit (exitSuccess)
+import XMonad
+import qualified XMonad.StackSet as W
+
+sendShutdownEvent :: IO ()
+sendShutdownEvent = do
+ dpy <- openDisplay ""
+ rw <- rootWindow dpy $ defaultScreen dpy
+ a <- internAtom dpy "XMONAD_SHUTDOWN" False
+ allocaXEvent $ \e -> do
+ setEventType e clientMessage
+ setClientMessageEvent e rw a 32 0 currentTime
+ sendEvent dpy rw False structureNotifyMask e
+ sync dpy False
+
+handleShutdownEvent :: Event -> X All
+handleShutdownEvent = \case
+ ClientMessageEvent { ev_message_type = mt } -> do
+ c <- (mt ==) <$> getAtom "XMONAD_SHUTDOWN"
+ when c shutdown
+ return (All c)
+ _ ->
+ return (All True)
+
+shutdown :: X ()
+shutdown = do
+ broadcastMessage ReleaseResources
+ io . flush =<< asks display
+ let wsData = show . W.mapLayout show . windowset
+ maybeShow (t, Right (PersistentExtension ext)) = Just (t, show ext)
+ maybeShow (t, Left str) = Just (t, str)
+ maybeShow _ = Nothing
+ extState =
+ return . show . catMaybes . map maybeShow . Map.toList . extensibleState
+ s <- gets (\s -> (wsData s : extState s))
+ _ <- io $ do
+ path <- getEnv "XMONAD_STATE"
+ writeFile path (unlines s)
+ exitSuccess
+ return ()