[Xmonad] darcs patch: Added LayoutMessages

[Andrea Rossato]

Hi,

as we said yestarday this is my proposal for a more sophisticated
layour message system.

Basically: UnDoLayouts is used for refreshes, LayoutSwitch wfor
notifying a layout change, and NonVisible when a layout is a workspace
not visible anymore.

This way we can have a non flickering tabbed, with proper handling of
fontStruct and windows, but without having to recreate/destroy these
resources at every refresh.

There is a new function sendMessage', for sending messages to a list
of layouts.

This is just a proposal. If you don't like the code style please let
me know (better if with directions): I'm always happy to improve!


The accompanying Tabbed code is finished: I just need to clean it up a
bit.

Andrea

Mon Sep 24 16:09:06 CEST 2007  Andrea Rossato <andrea.rossato at unibz.it>
  * Added LayoutMessages
  This patch adds some more messages to manage layout: LayoutSwitch and
  NonVisible. UnDoLayout is keep for Stack updates. NonVisible is sent
  to layouts in workspaces that are not visible anymore after a refresh.
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