I renamed set_count_internal to update_count_in_dom, because "internal"
was redundant in terms of saying the function was private, and it misled
me into thinking it was internal-only in impact, but it actually updates
the DOM.
I also removed the synchronous callback functions, since they both
led to simply hiding the count_span and clearing the text of the
value_span.
(imported from commit dea27d6414dc1b33818b24662f8246d687530b71)
Whenever we get a narrowing event, it's possible for new messages
to appear visible, and we need to call process_visible_unread_messages().
This has been a bug, but it's mostly obscured by the fact that we
call process_visible_unread_messages() as part of focus/scrolling
events.
(imported from commit b9447977f8e2272d45865ca67b436cacafd58a03)
This refactoring basically splits off two functions from update_unread_counts(),
which then becomes a simple three-liner.
The function get_unread_counts() is extracted, and it's purely functional
computation. It paves the way for a more pull-based approach to getting "unread"
counts, where other parts of the program can just call it to get values as
needed without worrying about side effects. It is staying in zephyr.js for
now.
The other function is stream_list.update_dom_with_unread_counts(), which
has a new home in stream_list.js. It handles all the DOM manipulation
aspect of unread counts in the left pane, mostly by delegating to smaller
functions within stream_list. Some of those smaller functions can now
be turned into private methods FWIW, but I'm not sure it's worth the
trouble.
(imported from commit 799f9ebbaed8d530829a4741ef14be04bd8abf5a)
The optimizations are:
* Sort over the list of subscriptions instead of the DOM li elements.
This requires storing the li elements for each sub on the sub object.
* Do a bulk insert of the li elements instead of doing them one by one.
(imported from commit 1a987799930fc677e25f0bc2dcf66f83a4ac3163)
Leo Franchi
Steve Howell
Luke Faraone
Zev Benjamin