Adding the phone's search button to this header is 43px more than the
row has at 320px, which is a width the app promises and which
header-action-overflow.spec.ts asks about. Measured on Playlists there,
after the fit pass had already collapsed all three actions into "More
actions" and truncated the title to nothing: title 0, count 50, sort
143, search 40, More 38, five 12px gaps and 32px of gutters -- 363 in
320, with the More button ending 27px past the edge. That is an action
clipped, which is the exact defect this pass exists to prevent.
The count is what yields, last, because it is the only item on that row
that is neither an identity nor an action. The title yields first and
may ellipsis away entirely, since the navigation also says which page
you are on; the sort control and the buttons are each the only place
they are said. An empty page says it is empty in its empty state and a
full one is being looked at. With the count gone the header is 304 in
304, and the title comes back to 19px.
It is rendered and hidden with an attribute rather than returned as
`nothing`, for the reason the action buttons are: every pass starts
from all-visible and needs a node to un-hide, or the first 320px window
costs the count for the rest of the session.
logan
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