Chat Settings Control Addon?

[acapela]

I want a way to disable chat completely, based on where I am. Leave it on in flex/normal/heroic, disable it comprehensively in LFR (all chat, of all kinds), switch to some selective settings when resting (i.e. in town), all on a window-by-window basis (I already run multiple chat windows).

Is there already something that could do this for me? I could probably build something, but no need to re-invent the wheel...

Thanks.