This function throttles the function and only allows the on scroll
event to fire the popovers.hide_all() function once on scroll start
(determined as > 250ms after the last scroll event fire on .app.
This should resolve some performance issues surrounding constantly
firing queries and potentially changing the document tree.
Apparently, the updated version of this has a serious scrolling
performance problem in the left sidebar that basically makes scrolling
in that area unusable.
This reverts commit b683b2d3c3.
This change makes it so that when you are creating a stream
and use "Copy from Stream", the UI will immediately
check/uncheck the user checkboxes that correspond to the
stream's subscribers.
In concrete terms this allows Cordelia to create a new
stream call "Paris" that has all the "Verona" subscribers
except for Hamlet.
It also makes it so that when you go to create the stream,
the response is a little quicker, because we don't have to
iterate the streams.
Finally, it removes an odd quirk from the original design,
where if you clicked on Denmark but then collapsed the
streams, we wouldn't actually add the Denmark subscribers
to your new stream.
The current UI will still be slightly intuitive for people, as
I think checkmarks don't really make sense here. What we
really want are Add/Remove links (or buttons) next to each
of the existing streams.
I moved the UI element for "Copy from Stream" to be above
the list of users, including the filter box and check/uncheck
links, which no longer get applied to the list of streams.
The reason I no longer apply the filter to streams is...
* It's kind of confusing to have filters apply to both
streams and users. There should be separate filters for
them, and I will try to resuscitate that feature later.
* The code to filter the streams was doing a sketchy
regex operation against user-inputted data. (`match()`)
* We want to use the same stream filtering code as the
right sidebar uses.
* It improves performance for the common case that you
are filtering users.
The reason I no longer apply the check-all/uncheck-all actions
to streams is that it would be crazy to select all your streams
to copy users from, and it would be expensive/slow for large
realms, and it would likely be done by accident if somebody was
trying to manage individual users.
Finally, the check-all/uncheck-all actions have been scoped
to the users filtered by the text box, so I moved the links
under the text box to make that hopefully more clear to users.
If we blank out the user filter for users (by hitting backspace,
for example), then we now have short-circuit logic to display all
the user checkboxes. (The user-facing behavior doesn't change here,
but now we don't have to process all the strings.)
The function people.filter_by_search_terms() used
to return a JS object with emails as keys to represent
a set of users. Now we return a Zulip Dict() object
with user_ids as keys.
The old implementation was O(N squared) for N = number of
users due to its using an O(N) selector inside of a loop.
Now we simply iterate through all the checkboxes and turn them
on or off based on a bunch of O(1) operations.
In case realms have subdomains and the user hasn't been populated
yet in the Django User model, `ZulipLDAPAuthBackend` should not
rely on user's email domain to determine in which realm it should
be created in.
Fixes: #2227.
Harshit Bansal
Brock Whittaker
Tim Abbott
Tomasz Kolek
Steve Howell
Raghav Jajodia
Feorlen
hackerkid
Sampriti Panda
Eitan Adler