fix(tray): Allow module to disappear for empty tray #3037
Merged
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Description
Modules that don't produce any output are hidden by the controller (don't have margins or separators).
The tray module should also do that for
format = <tray>
when there are no icons.This required the visibility handling to be tied to the module visibility instead of being handled by the renderer. Otherwise, the renderer would hide the tray (because the %{Pt} tag was never sent) and the tray would not unhide when new icons appeared; it can't differentiate between hidden because empty and hidden because the module is hidden by the user (the latter is the reason the renderer does hiding at all).
Fixes #3036
Documentation (check all applicable)