Most of this was straightforward.
Most functions that were grabbed verbatim and whole from
the original class still have one-line wrappers.
Many functions are just-the-data versions of functions that
remain in MessageList: see add, append, prepend, remove as
examples. In a typical pattern the MessageList code becomes
super simple:
prepend: function MessageList_prepend(messages) {
var viewable_messages = this.data.prepend(messages);
this.view.prepend(viewable_messages);
},
Two large functions had some minor surgery:
triage_messages =
top half of add_messages +
API to pass three lists back
change_message_id =
original version +
two simple callbacks to list
For the function update_muting_and_rerender(), we continue
to early-exit if this.muting_enabled is false, and we copied
that same defensive check to the new function
named update_items_for_muting(), even though it's technically
hidden from that codepath by the caller.
For a commit that was just merged I had the "back-out" case
at the wrong nesting level. It was a pretty obscure failure
scenario that never came up in practice, but basically if you
were starting at a message that was not in your narrow, but
we did have some messages in your narrow, we would try to
go near the old message instead of talking to the server to
find the next unread message in that narrow.
Barring a few minor edge cases, when we now do a narrow
that is based on a sidebar-like search (e.g. stream/topic,
no extra conditions), we now go directly to either the
first unread message we know about locally or the last
message if we're all caught up.
We of course used to do this in master until recently; this behavior
was broken by Tim's narrowing refactor branch (ending with
26ac1d237b) which moved us to always
using the select_first_unread flag, by default (fixing issues where if
you clicked around while your pointer was behind, you'd land in the
wrong place).
We now have arguably the best of both worlds:
* The pointer is not considered when computing narrowing positioning
* We only go to the server for sidebar clicks if the data isn't
available in the browser.
We had a recent regression that had kind of a funny symptom.
If somebody else edited a topic while you were in a topic
narrow, even if wasn't your topic, then your narrow would
mysteriously go empty upon the event coming to you.
The root cause of this is that when topic names change,
we often want to rerender a lot of the world due to muting.
But we want to suppress the re-render for topic narrows that
don't support the internal data structures.
This commit restores a simple guard condition that got lost
in a recent refactoring:
see 3f736c9b06
From tabbott: This is not the correct ultimate place to end up,
because if a topic-edit moves messages in or out of a topic, the new
behavior is wrong. But the bug this fixes is a lot worse than that,
and no super local change would do the right thing here.
We now do real-time sync to update the attachments UI when new
attachments are uploaded/deleted.
While we're at it, we fix the UI for the delete option to not do a
weird local echo thing.
This completes the work of a couple issues. There's still useful
performance work to do here (see the TODO), but it's a minor issue in
a rarely-used screen.
Fixes#6731.
Fixes#3710.
We send add events on upload, update events when sending a message
referencing it, and delete updates on removal.
This should make it possible to do real-time sync for the attachments
UI.
Based in part on work by Aastha Gupta.
We only use this data in a rarely-used settings screen, and it can be
large after years of posting screenshots.
So optimize the performance of / by just loading these data when we
actually visit the page.
This saves about 300ms of runtime for loading the home view for my
user account on chat.zulip.org.
A typo in my reading of 6cc2e8bbff meant
that we were incorrectly doing database queries for each Service
object, just to get the user_profile.id, which we already had.
This eliminates the need to call user_ids_to_users inside the
get_service_dicts_for_bots code path, saving a database query.
This completes my refactor to fix backend performance issues in this
code path. Previously, our messy layering of queries that resulted in
Zulip doing work even if none of the bots actually had Services or
config_data.
Our query for Custom Profile fields was for no good reason passing the
list of all users in the realm (potentially many thousands) into a
database query, rather than letting the database do that join.
Fixing this saves 100ms-200ms in the loading time for / on
chat.zulip.org for all users, since we were previously doing a ton of
work even if the feature wasn't being used.
This will likely change pretty quickly as we build this feature; I
wrote this just to have a central place to keep track of what we'll
need to document when we ship this feature.
These decorators will be part of the process for disabling access to
various features for guest users.
Adding this decorator to the subscribe endpoint breaks the guest users
test we'd just added for the subscribe code path; we address this by
adding a more base-level test on filter_stream_authorization.
The main thing here is writing check_string_fixed_length and
check_capped_string as returning a Validator, but we also fix issues
around passing default=None.
This is helpful for cases where an argument is supposed to be a normal
string, and we want to use a Zulip validator function to do basic
things like check its length.
Steve Howell
Vishwesh Jainkuniya
Tim Abbott
Vishnu Ks