We recently added a feature to warn users that they
may need to scroll down to view messages that they
just sent, but it was broken due to various complexities
in the rendering code path.
Now we compute it a bit more rigorously.
It requires us to pass some info about rendering up
and down the stack, which is why it's kind of a long
commit, but the bulk of the logic is in these JS files:
* message_list_view.js
* notifications.js
I choose to pass structs around instead of booleans,
because I anticipate we may eventually add more metadata
about rendering to it, plus bools are just kinda brittle.
(The exceptions are that `_maybe_autoscroll`, which
is at the bottom of the stack, just passes back a simple
boolean, and `notify_local_mixes`, also at the bottom
of the stack, just accepts a simple boolean.)
This errs on the side of warning the user, even if the
new message is partially visible.
Fixes#11138
We now have two functions:
add_new_messages
add_old_messages
This is a lot easier on the eyes, and it will also
prevent us from exceeding line length in future commits.
We also remove an unneeded stub in the narrow_activate
tests.
This commit makes it a bit more explicit about
why we're updating 2 or 3 message lists every time.
It looks funny now to repeat the home-list updates
in both sides of the conditional, but this will be
more obvious in a subsequent commit, where we want
to capture return values from rendering.
In a recent commit we allowed for `scroll_amount`
to be zero (as an indirect consequence of letting
`scroll_limit` be zero without early exiting).
See 0f75be3e8e
We want to short circuit the call to
`system_initiated_animate_scroll`, partly to save
unnecessary computation, but in particular to avoid
invoking the suppress-pointer-update logic.
It's convenient to have visible_bottom as well
as top/height, and the extra computation is
trivial (it's just arithmetic, no extra jQuery
involved).
There's some minor cleanup here too.
Previously, this wasn't an explicit feature of the export tool.
Note that the current version still includes metadata on private
streams and private message recipients, just not their messages.
This adds a proper template for the /digest page, making it a
reasonable way to view the digest email content for development and
debugging.
Fixes: #11016.
Previously, we had some hand-written logic for parsing the subject
line of the email's headers and turning it into a Python string using
each of the valid encodings for an email. That logic was buggy, and
sometimes resulted in a bytes object being passed into the
`send_zulip`, which would eventually throw an exception.
The fix for this is to use the Python standard library make_header
method for handling internationalized email headers.
https://stackoverflow.com/questions/7331351/python-email-header-decoding-utf-8