{-# LANGUAGE PatternGuards #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Actions.CopyWindow
-- Copyright : (c) David Roundy <droundy@darcs.net>, Ivan Veselov <veselov@gmail.com>, Lanny Ripple <lan3ny@gmail.com>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : ???
-- Stability : unstable
-- Portability : unportable
--
-- Provides bindings to duplicate a window on multiple workspaces,
-- providing dwm-like tagging functionality.
--
-----------------------------------------------------------------------------
module XMonad.Actions.CopyWindow (
-- * Usage
-- $usage
copy, copyToAll, copyWindow, runOrCopy
, killAllOtherCopies, kill1
-- * Highlight workspaces containing copies in logHook
-- $logHook
, wsContainingCopies
) where
import XMonad
import Control.Arrow ((&&&))
import Control.Monad
import qualified Data.List as L
import XMonad.Actions.WindowGo
import qualified XMonad.StackSet as W
-- $usage
--
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@ file:
--
-- > import XMonad.Actions.CopyWindow
--
-- Then add something like this to your keybindings:
--
-- > -- mod-[1..9] @@ Switch to workspace N
-- > -- mod-shift-[1..9] @@ Move client to workspace N
-- > -- mod-control-shift-[1..9] @@ Copy client to workspace N
-- > [((m .|. modMask x, k), windows $ f i)
-- > | (i, k) <- zip (workspaces x) [xK_1 ..]
-- > , (f, m) <- [(W.view, 0), (W.shift, shiftMask), (copy, shiftMask .|. controlMask)]]
--
-- To use the above key bindings you need also to import
-- "XMonad.StackSet":
--
-- > import qualified XMonad.StackSet as W
--
-- You may also wish to redefine the binding to kill a window so it only
-- removes it from the current workspace, if it's present elsewhere:
--
-- > , ((modMask x .|. shiftMask, xK_c ), kill1) -- @@ Close the focused window
--
-- Instead of copying a window from one workspace to another maybe you don't
-- want to have to remember where you placed it. For that consider:
--
-- > , ((modMask x, xK_b ), runOrCopy "firefox" (className =? "Firefox")) -- @@ run or copy firefox
--
-- Another possibility which this extension provides is 'making window
-- always visible' (i.e. always on current workspace), similar to corresponding
-- metacity functionality. This behaviour is emulated through copying given
-- window to all the workspaces and then removing it when it's unneeded on
-- all workspaces any more.
--
-- Here is the example of keybindings which provide these actions:
--
-- > , ((modMask x, xK_v ), windows copyToAll) -- @@ Make focused window always visible
-- > , ((modMask x .|. shiftMask, xK_v ), killAllOtherCopies) -- @@ Toggle window state back
--
-- For detailed instructions on editing your key bindings, see
-- "XMonad.Doc.Extending#Editing_key_bindings".
-- $logHook
-- To distinguish workspaces containing copies of the focused window use
-- something like:
--
-- > sampleLogHook h = do
-- > copies <- wsContainingCopies
-- > let check ws | ws `elem` copies = pad . xmobarColor "red" "black" $ ws
-- > | otherwise = pad ws
-- > dynamicLogWithPP myPP {ppHidden = check, ppOutput = hPutStrLn h}
-- >
-- > main = do
-- > h <- spawnPipe "xmobar"
-- > xmonad defaultConfig { logHook = sampleLogHook h }
-- | Copy the focused window to a workspace.
copy :: (Eq s, Eq i, Eq a) => i -> W.StackSet i l a s sd -> W.StackSet i l a s sd
copy n s | Just w <- W.peek s = copyWindow w n s
| otherwise = s
-- | Copy the focused window to all workspaces.
copyToAll :: (Eq s, Eq i, Eq a) => W.StackSet i l a s sd -> W.StackSet i l a s sd
copyToAll s = foldr copy s $ map W.tag (W.workspaces s)
-- | Copy an arbitrary window to a workspace.
copyWindow :: (Eq a, Eq i, Eq s) => a -> i -> W.StackSet i l a s sd -> W.StackSet i l a s sd
copyWindow w n = copy'
where copy' s = if n `W.tagMember` s
then W.view (W.currentTag s) $ insertUp' w $ W.view n s
else s
insertUp' a s = W.modify (Just $ W.Stack a [] [])
(\(W.Stack t l r) -> if a `elem` t:l++r
then Just $ W.Stack t l r
else Just $ W.Stack a (L.delete a l) (L.delete a (t:r))) s
-- | runOrCopy will run the provided shell command unless it can
-- find a specified window in which case it will copy the window to
-- the current workspace. Similar to (i.e., stolen from) "XMonad.Actions.WindowGo".
runOrCopy :: String -> Query Bool -> X ()
runOrCopy = copyMaybe . spawn
-- | Copy a window if it exists, run the first argument otherwise.
copyMaybe :: X () -> Query Bool -> X ()
copyMaybe f qry = ifWindow qry copyWin f
where copyWin = ask >>= \w -> doF (\ws -> copyWindow w (W.currentTag ws) ws)
-- | Remove the focused window from this workspace. If it's present in no
-- other workspace, then kill it instead. If we do kill it, we'll get a
-- delete notify back from X.
--
-- There are two ways to delete a window. Either just kill it, or if it
-- supports the delete protocol, send a delete event (e.g. firefox).
kill1 :: X ()
kill1 = do ss <- gets windowset
whenJust (W.peek ss) $ \w -> if W.member w $ delete'' w ss
then windows $ delete'' w
else kill
where delete'' w = W.modify Nothing (W.filter (/= w))
-- | Kill all other copies of focused window (if they're present).
-- 'All other' means here 'copies which are not on the current workspace'.
killAllOtherCopies :: X ()
killAllOtherCopies = do ss <- gets windowset
whenJust (W.peek ss) $ \w -> windows $
W.view (W.currentTag ss) .
delFromAllButCurrent w
where
delFromAllButCurrent w ss = foldr ($) ss $
map (delWinFromWorkspace w . W.tag) $
W.hidden ss ++ map W.workspace (W.visible ss)
delWinFromWorkspace w wid = W.modify Nothing (W.filter (/= w)) . W.view wid
-- | A list of hidden workspaces containing a copy of the focused window.
wsContainingCopies :: X [WorkspaceId]
wsContainingCopies = do
ws <- gets windowset
return $ copiesOfOn (W.peek ws) (taggedWindows $ W.hidden ws)
-- | Get a list of tuples (tag, [Window]) for each workspace.
taggedWindows :: [W.Workspace i l a] -> [(i, [a])]
taggedWindows = map $ W.tag &&& W.integrate' . W.stack
-- | Get tags with copies of the focused window (if present.)
copiesOfOn :: (Eq a) => Maybe a -> [(i, [a])] -> [i]
copiesOfOn foc tw = maybe [] hasCopyOf foc
where hasCopyOf f = map fst $ filter ((f `elem` ) . snd) tw
