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------------------------------------------------------------------------------
--- |
--- Module : XMonad.Actions.RotView
--- Copyright : (c) David Roundy <droundy@darcs.net>
--- License : BSD3-style (see LICENSE)
---
--- Maintainer : David Roundy <droundy@darcs.net>
--- Stability : unstable
--- Portability : unportable
---
--- Provides bindings to cycle through non-empty workspaces.
---
------------------------------------------------------------------------------
-
-module XMonad.Actions.RotView (
- -- * Usage
- -- $usage
- rotView
- ) where
-
-import Data.List ( sortBy, find )
-import Data.Maybe ( isJust )
-import Data.Ord ( comparing )
-
-import XMonad
-import XMonad.StackSet hiding (filter)
-
--- $usage
---
--- NOTE: This module is deprecated; see "XMonad.Actions.CycleWS".
---
--- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
---
--- > import XMonad.Actions.RotView
---
--- Then add appropriate key bindings, such as:
---
--- > , ((modMask x .|. shiftMask, xK_Right), rotView True)
--- > , ((modMask x .|. shiftMask, xK_Left), rotView False)
---
--- For detailed instructions on editing your key bindings, see
--- "XMonad.Doc.Extending#Editing_key_bindings".
-
--- | Cycle through non-empty workspaces. True --> cycle in the forward
--- direction. Note that workspaces cycle in order by tag, so if your
--- workspaces are not in tag-order, the cycling might seem wonky.
-rotView :: Bool -> X ()
-rotView forward = do
- ws <- gets windowset
- let currentTag = tag . workspace . current $ ws
- sortWs = sortBy (comparing tag)
- isNotEmpty = isJust . stack
- sorted = sortWs (hidden ws)
- pivoted = let (a,b) = span ((< currentTag) . tag) sorted in b ++ a
- pivoted' | forward = pivoted
- | otherwise = reverse pivoted
- nextws = find isNotEmpty pivoted'
- whenJust nextws (windows . view . tag)