Hierarchify

XMonad/Layout/WorkspaceDir.hs

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+{-# OPTIONS_GHC -fglasgow-exts #-} -- For deriving Data/Typeable
+{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
+
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonad.Layout.WorkspaceDir
+-- Copyright   :  (c) 2007  David Roundy <droundy@darcs.net>
+-- License     :  BSD3-style (see LICENSE)
+-- 
+-- Maintainer  :  David Roundy <droundy@darcs.net>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- WorkspaceDir is an extension to set the current directory in a workspace.
+--
+-- Actually, it sets the current directory in a layout, since there's no way I
+-- know of to attach a behavior to a workspace.  This means that any terminals
+-- (or other programs) pulled up in that workspace (with that layout) will
+-- execute in that working directory.  Sort of handy, I think.
+-- 
+-- Requires the 'directory' package
+--
+-----------------------------------------------------------------------------
+
+module XMonad.Layout.WorkspaceDir ( 
+                                   -- * Usage
+                                   -- $usage
+                                   workspaceDir, 
+                                   changeDir
+                                  ) where
+
+import System.Directory ( setCurrentDirectory )
+
+import XMonad
+import XMonad.Operations ( sendMessage )
+import XMonad.Util.Run ( runProcessWithInput )
+import XMonad.Prompt ( XPConfig )
+import XMonad.Prompt.Directory ( directoryPrompt )
+import XMonad.Layout.LayoutModifier
+
+-- $usage
+-- You can use this module with the following in your Config.hs file:
+--
+-- > import XMonad.Layout.WorkspaceDir
+-- >
+-- > layouts = map (workspaceDir "~") [ tiled, ... ]
+--
+-- In keybindings:
+--
+-- >  , ((modMask .|. shiftMask, xK_x     ), changeDir defaultXPConfig)
+
+-- %import XMonad.Layout.WorkspaceDir
+-- %keybind , ((modMask .|. shiftMask, xK_x     ), changeDir defaultXPConfig)
+-- %layout -- prepend 'map (workspaceDir "~")' to layouts definition above,
+-- %layout -- just before the list, like the following (don't uncomment next line):
+-- %layout -- layouts = map (workspaceDir "~") [ tiled, ... ]
+
+
+data Chdir = Chdir String deriving ( Typeable )
+instance Message Chdir
+
+data WorkspaceDir a = WorkspaceDir String deriving ( Read, Show )
+
+instance LayoutModifier WorkspaceDir a where
+    hook (WorkspaceDir s) = scd s
+    handleMess (WorkspaceDir _) m = return $ do Chdir wd <- fromMessage m
+                                                Just (WorkspaceDir wd)
+
+workspaceDir :: LayoutClass l a => String -> l a
+             -> ModifiedLayout WorkspaceDir l a
+workspaceDir s = ModifiedLayout (WorkspaceDir s)
+
+scd :: String -> X ()
+scd x = do x' <- io (runProcessWithInput "bash" [] ("echo -n " ++ x) `catch` \_ -> return x)
+           catchIO $ setCurrentDirectory x'
+
+changeDir :: XPConfig -> X ()
+changeDir c = directoryPrompt c "Set working directory: " (sendMessage . Chdir)