Enter WindowBringer, Bringer of Windows.

WindowBringer.hs

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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonadContrib.WindowBringer
+-- Copyright   :  Devin Mullins <me@twifkak.com>
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Devin Mullins <me@twifkak.com>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- dmenu operations to bring windows to you, and bring you to windows.
+--
+-----------------------------------------------------------------------------
+
+module XMonadContrib.WindowBringer (
+                            -- * Usage
+                            -- $usage 
+                            gotoMenu
+                           ) where
+
+import Control.Monad.State (gets)
+import Data.Char (toLower)
+import qualified Data.Map as M
+import Graphics.X11.Xlib (Window())
+
+import Operations (windows)
+import qualified StackSet as W
+import XMonad (X)
+import qualified XMonad as X
+import XMonadContrib.Dmenu (dmenuMap)
+import XMonadContrib.NamedWindows (getName)
+
+-- $usage
+-- WindowBringer brings you to windows. (A future edition will bring windows to
+-- you.)
+--
+-- Place in your Config.hs:
+-- > import XMonadContrib.WindowBringer
+-- and in the keys definition:
+-- > , ((modMask .|. shiftMask, xK_g     ), gotoMenu)
+--
+-- %import XMonadContrib.WindowBringer
+-- %keybind ((modMask .|. shiftMask, xK_g     ), gotoMenu)
+
+-- | Pops open a dmenu with window titles. Choose one, and you will be
+-- taken to the corresponding workspace.
+gotoMenu :: X ()
+gotoMenu = do
+  workspaceMap >>= dmenuMap >>= flip X.whenJust (windows . W.greedyView)
+
+-- | A map from decorated window name to target workspace ID, for use by gotoMenu.
+workspaceMap :: X (M.Map String X.WorkspaceId)
+workspaceMap = do
+  ws <- gets X.windowset
+  M.fromList `fmap` concat `fmap` mapM keyValuePairs (W.workspaces ws)
+ where keyValuePairs ws = mapM (keyValuePair ws) $ W.integrate' (W.stack ws)
+       keyValuePair ws w = flip (,) (W.tag ws) `fmap` decorateName ws w
+
+-- | Returns the window name as will be listed in dmenu.
+-- Lowercased, for your convenience (since dmenu is case-sensitive).
+-- Tagged with the workspace ID, to guarantee uniqueness, and to let the user know where he's going.
+decorateName :: X.WindowSpace -> Window -> X String
+decorateName ws w = do
+  name <- fmap (map toLower . show) $ getName w
+  return $ name ++ " [" ++ W.tag ws ++ "]"