{-# LANGUAGE PatternGuards #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Util.NamedScratchpad
-- Copyright : (c) Konstantin Sobolev <konstantin.sobolev@gmail.com>
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Konstantin Sobolev <konstantin.sobolev@gmail.com>
-- Stability : unstable
-- Portability : unportable
--
-- Named scratchpads that support several arbitrary applications at the same time.
--
-----------------------------------------------------------------------------
module XMonad.Util.NamedScratchpad (
-- * Usage
-- $usage
NamedScratchpad(..),
NamedScratchpads,
namedScratchpadAction,
namedScratchpadManageHook,
namedScratchpadFilterOutWorkspace
) where
import XMonad
import XMonad.Core
import XMonad.ManageHook (composeAll,doFloat)
import XMonad.Hooks.ManageHelpers (doRectFloat)
import XMonad.Actions.DynamicWorkspaces (addHiddenWorkspace)
import Control.Monad (filterM)
import Data.Maybe (maybe,listToMaybe)
import qualified XMonad.StackSet as W
-- $usage
-- Allows to have several floating scratchpads running different applications.
-- Bind a key to 'namedScratchpadSpawnAction'.
-- Pressing it will spawn configured application, or bring it to the current
-- workspace if it already exists.
-- Pressing the key with the application on the current workspace will
-- send it to a hidden workspace called @NSP@.
--
-- If you already have a workspace called @NSP@, it will use that.
-- @NSP@ will also appear in xmobar and dzen status bars. You can tweak your
-- @dynamicLog@ settings to filter it out if you like.
--
-- Create named scratchpads configuration in your xmonad.hs like this:
--
-- > import XMonad.StackSet as W
-- > import XMonad.ManageHook
-- > import XMonad.Util.NamedScratchpad
-- >
-- > scratchpads = [
-- > -- run htop in xterm, find it by title, use default geometry
-- > NS "htop" "xterm -e htop" (title =? "htop") Nothing ,
-- > -- run stardict, find it by class name, place the window
-- > -- 1/6 of screen width from the left, 1/6 of screen height
-- > -- from the top, 2/3 of screen width by 2/3 of screen height
-- > NS "stardict" "stardict" (className =? "Stardict")
-- > (Just $ W.RationalRect (1/6) (1/6) (2/3) (2/3))
-- > ]
--
-- Add keybindings:
--
-- > , ((modMask x .|. controlMask .|. shiftMask, xK_t), namedScratchpadAction scratchpads "htop")
-- > , ((modMask x .|. controlMask .|. shiftMask, xK_s), namedScratchpadAction scratchpads "stardict")
--
-- ... and a manage hook:
--
-- > , manageHook = namedScratchpadManageHook scratchpads
--
-- For detailed instruction on editing the key binding see
-- "XMonad.Doc.Extending#Editing_key_bindings"
--
-- | Single named scratchpad configuration
data NamedScratchpad = NS { name :: String -- ^ Scratchpad name
, cmd :: String -- ^ Command used to run application
, query :: Query Bool -- ^ Query to find already running application
, rect :: Maybe W.RationalRect -- ^ Floating window geometry
}
-- | Named scratchpads configuration
type NamedScratchpads = [NamedScratchpad]
-- | Finds named scratchpad configuration by name
findByName :: NamedScratchpads -> String -> Maybe NamedScratchpad
findByName c s = listToMaybe $ filter ((s==).name) c
-- | Runs application which should appear in specified scratchpad
runApplication :: NamedScratchpad -> X ()
runApplication = spawn . cmd
-- | Action to pop up specified named scratchpad
namedScratchpadAction :: NamedScratchpads -- ^ Named scratchpads configuration
-> String -- ^ Scratchpad name
-> X ()
namedScratchpadAction confs n
| Just conf <- findByName confs n = withWindowSet $ \s -> do
-- try to find it on the current workspace
filterCurrent <- filterM (runQuery (query conf))
( (maybe [] W.integrate . W.stack .
W.workspace . W.current) s)
case filterCurrent of
(x:_) -> do
-- create hidden workspace if it doesn't exist
if null (filter ((== scratchpadWorkspaceTag) . W.tag) (W.workspaces s))
then addHiddenWorkspace scratchpadWorkspaceTag
else return ()
-- push window there
windows $ W.shiftWin scratchpadWorkspaceTag x
[] -> do
-- try to find it on all workspaces
filterAll <- filterM (runQuery (query conf)) (W.allWindows s)
case filterAll of
(x:_) -> windows $ W.shiftWin (W.currentTag s) x
[] -> runApplication conf
| otherwise = return ()
-- tag of the scratchpad workspace
scratchpadWorkspaceTag :: String
scratchpadWorkspaceTag = "NSP"
-- | Manage hook to use with named scratchpads
namedScratchpadManageHook :: NamedScratchpads -- ^ Named scratchpads configuration
-> ManageHook
namedScratchpadManageHook = composeAll . fmap (\c -> query c --> maybe doFloat doRectFloat (rect c))
-- | Transforms a workspace list containing the NSP workspace into one that
-- doesn't contain it. Intended for use with logHooks.
namedScratchpadFilterOutWorkspace :: [WindowSpace] -> [WindowSpace]
namedScratchpadFilterOutWorkspace = filter (\(W.Workspace tag _ _) -> tag /= scratchpadWorkspaceTag)
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