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import XMonad

import Data.Monoid
import System.Exit
import qualified XMonad.StackSet as W
import qualified Data.Map        as M

import XMonad.Util.SpawnOnce
import XMonad.Hooks.DynamicLog

import XMonad.Layout.SimpleFloat
-- import XMonad.Layout.TrackFloating

main = xmonad =<< statusBar myBar myPP toggleStrutsKey myConfig

myConfig = def
    { terminal    = "termite"
    , modMask     = mod4Mask
    , borderWidth = 2
    , startupHook = myStartupHook
    , keys = myKeys
    , layoutHook = myLayout
    , workspaces = myWorkspaces
    , manageHook = myManageHook
    }

--bar--------------------------------------------------
myBar = "xmobar"

-- Custom PP, determines what is being written to the bar.
myPP = xmobarPP { ppCurrent = xmobarColor "#429942" "" . wrap "<" ">" }

-- Key binding to toggle the gap for the bar.
toggleStrutsKey XConfig {XMonad.modMask = modMask} = (modMask, xK_b)

-- Make xmobar workspaces clickable
-- following code just makes myWorkspaces keep a list of "<action=xdotool key super+n>n</action>"
xmobarEscape = concatMap doubleLts
  where doubleLts '<' = "<<"
        doubleLts x   = [x]

myWorkspaces = clickable . (map xmobarEscape) $ map show [1..9]
  where
    clickable l = [ "<action=xdotool key super+" ++ show (n) ++ ">" ++ ws ++ "</action>" |
                             (i,ws) <- zip [1..9] l,
                            let n = i ]

--startup--------------------------------------------------
myStartupHook = do
    spawnOnce "xset -b &"
    spawnOnce "setxkbmap -layout us,rs -variant ,alternatequotes -option grp:alt_shift_toggle,caps:swapescape &"
    spawnOnce "feh --bg-fill stuff/pictures/wallpaper.jpg &"
    spawnOnce "dunst &"
    spawnOnce "udiskie &"
    spawnOnce "picom &"

--layout--------------------------------------------------
-- myLayout = tiled ||| Mirror tiled ||| Full
myLayout = tiled ||| Mirror tiled ||| Full ||| simpleFloat
  where
     -- default tiling algorithm partitions the screen into two panes
     tiled   = Tall nmaster delta ratio

     -- The default number of windows in the master pane
     nmaster = 1

     -- Default proportion of screen occupied by master pane
     ratio   = 1/2

     -- Percent of screen to increment by when resizing panes
     delta   = 3/100

--Window rules--you can use xprop to see WM_NAME or WM_CLASS------------------
myManageHook = composeAll
    [ className =? "MPlayer"        --> doFloat
    , resource  =? "desktop_window" --> doIgnore
    , resource  =? "kdesktop"       --> doIgnore ]

--keys-------------------------------------------------------------------------
myKeys conf@(XConfig {XMonad.modMask = modm}) = M.fromList $

    -- launch a terminal
    [ ((modm .|. shiftMask, xK_Return), spawn $ XMonad.terminal conf)

    -- my keybindings -----------------------------------------------
    , ((modm, xK_bracketleft), spawn "amixer -q sset Master 5%+")
    , ((modm, xK_apostrophe), spawn "amixer -q sset Master 5%-")
    , ((modm, xK_semicolon), spawn "amixer -q sset Master toggle")
    , ((modm,               xK_u     ), spawn "~/stuff/scripts/unmount-usb")
    , ((modm,               xK_s     ), spawn "scrot -ze 'mv $f ~/stuff/pictures/screenshots/'")
    -- my keybindings stop -----------------------------------------------

    -- launch dmenu
    , ((modm,               xK_p     ), spawn "dmenu_run")

    -- launch gmrun
    , ((modm .|. shiftMask, xK_p     ), spawn "gmrun")

    -- close focused window
    , ((modm .|. shiftMask, xK_c     ), kill)

     -- Rotate through the available layout algorithms
    , ((modm,               xK_space ), sendMessage NextLayout)

    --  Reset the layouts on the current workspace to default
    , ((modm .|. shiftMask, xK_space ), setLayout $ XMonad.layoutHook conf)

    -- Resize viewed windows to the correct size
    , ((modm,               xK_n     ), refresh)

    -- Move focus to the next window
    , ((modm,               xK_Tab   ), windows W.focusDown)

    -- Move focus to the next window
    , ((modm,               xK_j     ), windows W.focusDown)

    -- Move focus to the previous window
    , ((modm,               xK_k     ), windows W.focusUp  )

    -- Move focus to the master window
    , ((modm,               xK_m     ), windows W.focusMaster  )

    -- Swap the focused window and the master window
    , ((modm,               xK_Return), windows W.swapMaster)

    -- Swap the focused window with the next window
    , ((modm .|. shiftMask, xK_j     ), windows W.swapDown  )

    -- Swap the focused window with the previous window
    , ((modm .|. shiftMask, xK_k     ), windows W.swapUp    )

    -- Shrink the master area
    , ((modm,               xK_h     ), sendMessage Shrink)

    -- Expand the master area
    , ((modm,               xK_l     ), sendMessage Expand)

    -- Push window back into tiling
    , ((modm,               xK_t     ), withFocused $ windows . W.sink)

    -- Increment the number of windows in the master area
    , ((modm              , xK_comma ), sendMessage (IncMasterN 1))

    -- Deincrement the number of windows in the master area
    , ((modm              , xK_period), sendMessage (IncMasterN (-1)))

    -- Toggle the status bar gap
    -- Use this binding with avoidStruts from Hooks.ManageDocks.
    -- See also the statusBar function from Hooks.DynamicLog.
    --
    -- , ((modm              , xK_b     ), sendMessage ToggleStruts)

    -- Quit xmonad
    , ((modm .|. shiftMask, xK_q     ), io (exitWith ExitSuccess))

    -- Restart xmonad
    , ((modm              , xK_q     ), spawn "xmonad --recompile; xmonad --restart")

    -- Run xmessage with a summary of the default keybindings (useful for beginners)
    , ((modm .|. shiftMask, xK_slash ), spawn ("echo \"" ++ help ++ "\" | xmessage -file -"))
    ]
    ++

    --
    -- mod-[1..9], Switch to workspace N
    -- mod-shift-[1..9], Move client to workspace N
    --
    [((m .|. modm, k), windows $ f i)
        | (i, k) <- zip (XMonad.workspaces conf) [xK_1 .. xK_9]
        , (f, m) <- [(W.greedyView, 0), (W.shift, shiftMask)]]
    ++

    --
    -- mod-{w,e,r}, Switch to physical/Xinerama screens 1, 2, or 3
    -- mod-shift-{w,e,r}, Move client to screen 1, 2, or 3
    --
    [((m .|. modm, key), screenWorkspace sc >>= flip whenJust (windows . f))
        | (key, sc) <- zip [xK_w, xK_e, xK_r] [0..]
        , (f, m) <- [(W.view, 0), (W.shift, shiftMask)]]

-- | Finally, a copy of the default bindings in simple textual tabular format.
help :: String
help = unlines ["The default modifier key is 'alt'. Default keybindings:",
    "",
    "-- launching and killing programs",
    "mod-Shift-Enter  Launch xterminal",
    "mod-p            Launch dmenu",
    "mod-Shift-p      Launch gmrun",
    "mod-Shift-c      Close/kill the focused window",
    "mod-Space        Rotate through the available layout algorithms",
    "mod-Shift-Space  Reset the layouts on the current workSpace to default",
    "mod-n            Resize/refresh viewed windows to the correct size",
    "",
    "-- move focus up or down the window stack",
    "mod-Tab        Move focus to the next window",
    "mod-Shift-Tab  Move focus to the previous window",
    "mod-j          Move focus to the next window",
    "mod-k          Move focus to the previous window",
    "mod-m          Move focus to the master window",
    "",
    "-- modifying the window order",
    "mod-Return   Swap the focused window and the master window",
    "mod-Shift-j  Swap the focused window with the next window",
    "mod-Shift-k  Swap the focused window with the previous window",
    "",
    "-- resizing the master/slave ratio",
    "mod-h  Shrink the master area",
    "mod-l  Expand the master area",
    "",
    "-- floating layer support",
    "mod-t  Push window back into tiling; unfloat and re-tile it",
    "",
    "-- increase or decrease number of windows in the master area",
    "mod-comma  (mod-,)   Increment the number of windows in the master area",
    "mod-period (mod-.)   Deincrement the number of windows in the master area",
    "",
    "-- quit, or restart",
    "mod-Shift-q  Quit xmonad",
    "mod-q        Restart xmonad",
    "mod-[1..9]   Switch to workSpace N",
    "",
    "-- Workspaces & screens",
    "mod-Shift-[1..9]   Move client to workspace N",
    "mod-{w,e,r}        Switch to physical/Xinerama screens 1, 2, or 3",
    "mod-Shift-{w,e,r}  Move client to screen 1, 2, or 3",
    "",
    "-- Mouse bindings: default actions bound to mouse events",
    "mod-button1  Set the window to floating mode and move by dragging",
    "mod-button2  Raise the window to the top of the stack",
    "mod-button3  Set the window to floating mode and resize by dragging"]