We now use stream_id as our key to rename streams, which
should prevent a few race conditions long term. (We are
still possibly contending with other events that use
stream_name as a key, so this is not perfect.)
We get events to delete subscribers for streams we are not
necessarily subscribed to, and it is now important to
process those events to produce the correct UI for showing
the number of subscribers to streams.
The startup code in subs.js used to intermingle data
stuff and UI stuff in a loop inside a called function,
which made the code hard to reason about.
Now there is a clear separation of concerns, with these methods
being called in succession:
stream_data.initialize_from_page_params();
stream_list.create_initial_sidebar_rows();
The first method was mostly extracted from subs.js, but I simplified
some things, like not needing to make a copy of the hashes
we were passed in, plus I now garbage collect email_dict. Also,
the code path that initialize_from_page_params() mostly replaces
used to call create_sub(), which fired a trigger, but now it
just does data stuff.
Once the data structure is built up, it's a very simple matter
to build the initial sidebar rows, and that's what the second
method does.
This function will make it easier to unit test upcoming
changes related to stream counts.
This was mostly moving code, but one change is that we
don't call create_subs() in subs.js any more (which would
have been kind of circular dependency), since the only thing
that it did besides calling a more appropriate function
in stream_data.js was to generate a trigger that was
subsequently ignored and possibly a UI trap, as we don't
want to be messing with the stream sidebar when we go into
the stream settings page.
We now simply call exports.create_sub_from_server_data() for
newly encountered unsubscribed streams (which don't belong in
the sidebar anyway.)
This function used to live in subs.js. It's mostly a code move,
but I simplified the logic to determine whether it's subscribed
not to do a lookup into the same data structure that the sub
already came from.
I also added some tests.
This moves these functions from subs.js to stream_data.js:
receives_desktop_notifications
receives_audible_notifications
This makes notifications.js no longer dependent on the
bloated subs.js.
The JS code can now call stream_data.get_sub_by_id() to get
a sub from a stream_id. Subs have stream_id due to a prior commit,
and we keep track of the mapping in stream_data's subs_by_stream_id
variable.
(imported from commit 409e13d6d2e79d909441a66c85ee651529d15cd2)
The tutorial introduces "engineering" messages that might not
be in the user's normal subscription, and they would get a gray
border if we did not override the stream color. Before this change,
we accomplished this by overriding the core data structure in
stream_data.js. Now we are a bit more future-proof; we only
override stream_color.default_color.
(imported from commit 0d0845b72f766912679f5aa7641ae9a60fdbb4ce)
I want to make subscribed_streams() external, but it conflicts with
a legacy name in the same module (stream_data.js), so I have to rename
it in the same commit. The new name conforms better to the current
naming convention, which generally has functions returning objects
use "sub" in the name.
(imported from commit 9f1ed60772c649359a413257e0998857eab3603f)
For a large domain like HS, we were pulling back about 100k of
text with subscriber emails when we opened the Streams page.
This was unnecessary, as the subscribers aren't shown until
you expand the stream, and there's already an AJAX call.
(imported from commit 69b83d769030d87318acefc364ac6ff3a2ec3605)
Warn inside these functions when you get data on streams that you
are not subscribed to:
add_subscriber
remove_subscriber
user_is_subscribed
The back end should be smart enough not to spam us with subscriber
info that we don't care about.
(imported from commit b27644be2abc37c11ddff884ef392ea208bd1bd3)
Though this should not be common, getting a peer subscribed/
unsubscribed notification to a stream we don't yet know about should
not be fatal
(imported from commit ee28b163e0efc9adfad31e1b321e986dfe56271e)
This is feature-flagged to staging only.
There are basically 3 parts to the implementation:
1. In response to typing, fade/unfade the user list.
2. When a compose is aborted, unfade all users.
3. When the presence list is redrawn, fade/unfade the user list again.
(imported from commit cd416de232849a9f69dcacdc8b0fcfc20e3848a2)
This function returns the stream's actual name, if we can get it;
otherwise, it's the identity function.
(imported from commit 7a981adba9632d6c6eba54cb6514a9226d1e83e8)
Steve Howell
Vishnu Ks
Steve Howell
Jessica McKellar
Leo Franchi
Scott Feeney
Jessica McKellar