Rudimentary pending buffer shown in Xmobar.

1 files changed, 53 insertions, 0 deletions

diff --git a/src/Rahm/Desktop/XMobarLog/PendingBuffer.hs b/src/Rahm/Desktop/XMobarLog/PendingBuffer.hs
new file mode 100644
index 0000000..0c00649
--- /dev/null
+++ b/src/Rahm/Desktop/XMobarLog/PendingBuffer.hs
@@ -0,0 +1,53 @@
+module Rahm.Desktop.XMobarLog.PendingBuffer where
+
+import Control.Monad (forM_, join)
+import Data.Default
+import Data.List (sortOn, (\\))
+import Data.Map (Map)
+import qualified Data.Map as Map
+import Data.Maybe
+import Data.Proxy
+import Data.Typeable
+import Rahm.Desktop.Logger
+import XMonad (X)
+import qualified XMonad as X
+import qualified XMonad.StackSet as W
+import qualified XMonad.Util.ExtensibleState as XS
+
+-- The pending buffer keeps track of pending characters. This is useful for when
+-- inputing Wml language constructs. Helps to keep the user from being too lost
+-- wheen it comes to keeping track of keystrokes.
+
+newtype PendingBuffer = PendingBuffer {unPendingBuffer :: [Char]}
+
+instance Default PendingBuffer where
+  def = PendingBuffer []
+
+instance X.ExtensionClass PendingBuffer where
+  initialValue = def
+
+addStringToPendingBuffer :: [Char] -> X ()
+addStringToPendingBuffer str = do
+  XS.modify $ \(PendingBuffer cs) ->
+    PendingBuffer (cs ++ str)
+
+  X.logHook . X.config =<< X.ask
+
+setPendingBuffer :: [Char] -> X ()
+setPendingBuffer cs = do
+  XS.put $ PendingBuffer cs
+  X.logHook . X.config =<< X.ask
+
+clearPendingBuffer :: X ()
+clearPendingBuffer = do
+  XS.put (def :: PendingBuffer)
+  X.logHook . X.config =<< X.ask
+
+getPendingBuffer :: X [Char]
+getPendingBuffer = unPendingBuffer <$> XS.get
+
+withPendingBuffer :: X () -> X ()
+withPendingBuffer fn = do
+  clearPendingBuffer
+  fn
+  clearPendingBuffer