Instead of prohibiting ‘return undefined’ (#8669), we require that a
function must return an explicit value always or never. This prevents
you from forgetting to return a value in some cases. It will also be
important for TypeScript, which distinguishes between undefined and
void.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
ES and TypeScript modules are strict by default and don’t need this
directive. ESLint will remind us to add it to new CommonJS files and
remove it from ES and TypeScript modules.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Prettier would do this anyway, but it’s separated out for a more
reviewable diff. Generated by ESLint.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
`stream_topic_history` is a more appropriate name as this
module will contain information about last message of a
stream in upcoming commits. Function and variable names
are changed accordingly like:
* topic_history() -> per_stream_history()
* get_recent_names() -> get_recent_topic_names()
* name -> topic_name
We avoid complicated code to update unread counts
by just using vdom.js.
One small change here is that if click on "more
topics", we replace it with the spinner instead
of putting the spinner after it. This saves us
a redraw under the new scheme.
Babel strict generates more code for [...x] than you’d like, while
Babel loose mode assumes x is an array.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This function will make more sense when we start
tracking api calls that retrieve topic history.
The unit tests here are kinda duplicating what we
have in the stream_data tests. If we move the
function out of stream_data, we can kill off the
tests there, but for now I think a bit of duplicate
testing is fine here.
This is mostly for tactical reasons. It's hard to
get 100% test coverage on topic_list.js, but it
should be easy to get 100% test coverage on this
very important function.
I considered just moving this code into topic_data.js,
but it just didn't feel quite right. I feel like
this is a pretty core piece of code that's nice
to be by itself and not be near other complicated
code that does stuff like build widgets or talk
to servers. (And, again, it's not just the actual
code here, which is pretty small, it's the unit
tests, which are inherently verbose to exercise
all the edge cases.)
There was an edge case with the old
code when you had exactly between 6 and 8
topics and all in cache, with a couple of
the topics being unread.
We would show "more topics" when you were
actually seeing all your possible topics.
To test this:
- create 7 topics on Venice
- as Iago, narrow to any of the Venice
topics
- as Aaron, send unreads to 3 or 4
of the other topics
Eventually Iago will have all possible
topics in the sidebar. On master we'll
show "more topics", whereas after this commit
we correctly avoid that.
It's a pretty harmless bug, since it just
leads to a useless zoom-in.
I have always felt we should zoom-in
regardless of how many topics you have,
just for consistency sake, but I also
understand the rationale behind our
current intentions.
This is basically trying to confine the
rendering logic to a smaller function,
since I want to work toward a better
approach for redrawing the topic list.
Also, since the new function is now
purely data-oriented, it will be a
bit easier to test various edge cases.
If you clicked for no more topics and then the server didn't find any,
we once had code that would say "No more topics" in light gray at the
bottom of the topic list.
The feature appears to have been broken by some detail in the
`self.dom` refactoring. More importantly, it's not clear it's useful
as opposed to clutter.
Since we added the `stream.first_message_id` feature, it's now very
rare for the `more topics` option to appear when there aren't in fact
older topics that could be fetched. In cases where there are not, the
UI is still clear about what's happening -- it shows a loading
indicator and then displays a list of topics that doesn't have
anything new.
So we're removing this feature; we can re-add it without too much
difficulty if user feedback in the future suggests it would be useful
after all.
The only place we ever set active-sub-filter is
right after we build the template, so there is
no reason to have it be a separate step.
(I made a similar fix to pm_list recently, and
this helps set the stage for doing vdom-like
stuff.)
The previous logic was a bit byzantine, making a lot of inferences
based on which conditionals had already been processed that made it
hard to read. This simple function approach promises to be more
readable.
This is for consistency with how we show unreads in muted topics at
the stream level, avoiding distracting users with the appearance of
unread messages in muted topics that they've made clear they are not
interested in.
Arguably, we should show a faded count if there are unreads on muted
topics (but none on unmuted topics), but that seems somewhat complex
to maintain, and we'd benefit from user feedback to make an effective
decision on whether it'd be an improvement.
Fixes#13676.
I think this probably matches users' expected behavior that muted
streams shouldn't get in their way unless the user is actively looking
for them. If a user has a lot of muted topics with active traffic
(e.g. because topics corresponding to channels in a mirrored Slack
instance), they would previously find their 5 slots cluttered with
those muted topics even if there were unmuted topics with unread
messages.
Fixes#13677.
We have ~5 years of proof that we'll probably never
extend Dict with more options.
Breaking the classes into makes both a little faster
(no options to check), and we remove some options
in FoldDict that are never used (from/from_array).
A possible next step is to fine-tune the Dict to use
Map internally.
Note that the TypeScript types for FoldDict are now
more specific (requiring string keys). Of course,
this isn't really enforced until we convert other
modules to TS.
This avoids a stream having potentially near-infinite height when
opened in a stream with a large number of unread topics; the benefit
is that you can easily access the next stream.
We show an unread count next to "more topics" to make it hard to miss
that there might be more, older topics with unread messages.
With CSS work by Anders Kaseorg.
Fixes#13087.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`. It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
perfect-scrollbar replaces both the appearance and the behavior of the
scrollbar, and its emulated behavior will never feel native on most
platforms. SimpleBar customizes the appearance while preserving the
native behavior.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This makes the "more topics" option which appears below the list of
known topics in the left sidebar appear only when it's possible there
are actually more topics to be displayed. Two specific cases it
resolves completely include:
* Newly created realms; this widget was a common source of confusion
for new organization administrators.
* Newly created streams.
There are still some corner cases this doesn't handle, e.g. if you
just joined a private stream with protected history, but there isn't
as easy a fix for those.
Essentially rewritten by tabbott to fix code duplication and comment
extensively.
Fixes#10265.
Anders Kaseorg
Hashir Sarwar
Steve Howell
Anders Kaseorg
Tim Abbott
Anders Kaseorg
Thomas Ip
Challa Venkata Raghava Reddy