If we find unread messages for a sender, we will
try to render locally narrow for sender searches.
Note that our current implementation brute forces
through all the unread ids. We can improve this,
although it's not really a bottleneck until we
also support buckets for general filtering.
We now try harder to find the first unread message in an
upcoming narrow, which has the user-visible effect that we
select the unread message before waiting for search results.
Before this change, we only applied this logic to searches
that were things like exactly stream/topic or exactly is-private.
Now we will also handle things like stream/topic/sender. For
the stream/topic piece we look up candidate unread ids using
the steam/topic buckets in unread.js, but then we still filter
those messages by stream/topic/sender as we look for the first
unread id.
I renamed get_unread_ids() to _possible_unread_message_ids().
The name is deliberately verbose, since we're about
to make it have kind of unusual semantics that only make sense
for its one caller.
The outside code will continue to call get_first_unread_info().
In the tests I wrap this function in a wrapper with the more
pleasant name of "candidate_ids", since in the test there's
less worry about unwittingly exposing a kind of janky function.
This is setting up for a subsequent commit to have a smaller
diff. The current ordering of the code blocks doesn't matter,
since only one of the conditions will be true, so this won't
change any behavior. (Later commits will make the order matter.)
This new API replaces some more specific functions that were
only recently introduced:
is_stream_only
is_stream_topic_only
is_pm_with_only
is_for_only
We use the deterministically sorted "term_type" values for
matching. (Notably "stream" will come before "topic".)
Even though starred messages are never unread, it's useful
for us to have helper functions for them.
This change makes it so that clicking on "Starred Messages"
takes you to the last read message immediately, without a
server delay.
This takes advantage of the new function narrow_state.stream_id().
We now assume the incoming stream_id is a valid stream_id, so we
no longer need to test some of the error checking. (It's possible that
the incoming stream_id may no longer be for a stream you subscribe
to, but the nice benefit of working more in "id space" is that if
it doesn't match the narrow's stream id, we know false is a safe
return value.)
Also adds a custom rule to eslint. Since the recommended way of extending
eslint is to create plugins as standalone npm packages, the separate rule
is published as 'eslint-plugins-empty-returns'.
Fixes#8669.
Using get_name() is more robust for stream name changes. This
fixes, for example, the situation where you narrow to a stream,
edit it via the sidebar, and then close the modal, and the message
redraw logic thinks you have unsubscribed.
Fixes#4686.
Despite the length of this commit, it is a very straightforward
moving of code from narrow.js -> narrow_state.js, and then
everything else is just s/narrow.foo()/narrow_state.foo()/
(with a few tiny cleanups to remove some code duplication
in certain callers).
The only new functions are simple setter/getters that
encapsulate the current_filter variable:
narrow_state.reset_current_filter()
narrow_state.set_current_filter()
narrow_state.get_current_filter()
We removed narrow.predicate() as part of this, since it was dead
code.
Also, we removed the shim for narrow_state.set_compose_defaults(),
and since that was the last shim, we removed shim.js from the app.
