[xmonad] Switch to previous workspace layout

[Brandon Allbery]

On Sat, Jan 18, 2014 at 9:20 PM, Ruslan Kiianchuk <
ruslan.kiianchuk at gmail.com> wrote:

> Yet I have a question on switching workspace layouts. I'd like the Mod +
> Shift + Space shortcut to switch to previous workspace instead of the
> first (default) one. In default config I found only:
>
>      -- 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)
>
>
> Also looking through XMonad.Layout I could find only NextLayout and
> FirstLayout messages. No PreviousLayout. Is there any straight forward
> way to implement that?
>

The layoutHook is a function; a previous-layout mechanism would involve
trying to run that function "backwards". There is unfortunately no way
around this.

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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