`WindowScreen` is a type synonym for the specialized `Screen` type, that
results from the `WindowSet` definition in XMonad.Core. Having this type
defined and exported in a central module saves extension developers from
trying to reconstruct it, whenever the general `Screen i l a sid sd` is
not suitable.
Note: this should be moved to `XMonad.Core` in the next core release.
Whenever possible, prefer the safe wrappers withWindowAttributes or
safeGetWindowAttributes to getWindowAttributes.
Places where these are not applicable are limited to layouts, where
there is not good "default value" to give back in case these calls fail.
In these cases, we let the exception handling of the layout mechanism
handle it and fall back to the Full layout.
Fixes: https://github.com/xmonad/xmonad-contrib/issues/146
This is a convenience module in order to have less import noise. It
re-exports the following:
a) Commonly used modules in full (Data.Foldable, Data.Applicative, and
so on); though only those that play nicely with each other, so that
XMonad.Prelude can be imported unqualified without any problems.
This prevents things like `Prelude.(.)` and `Control.Category.(.)`
fighting with each other.
b) Helper functions that don't necessarily fit in any other module;
e.g., the often used abbreviation `fi = fromIntegral`.
