Fixes part of #10026.
Adds additional option to typeahead:
`tabOpensEmptyTypeahead`(default: false):
tabOpensEmptyTypeahead overrides helpOnEmptyStrings.
This commit sets helpOnEmptyStrings to false and
tabOpensEmptyTypeahead to true. Now typeahead will
open on an empty string only if Tab has been pressed.
Fixes part of #10026.
NOTE: The Tab key will select option from typeahead if the typeahead
is already open i.e the same behaviour as Enter.
NOTE: This behaviour applies irrespective of search pills are enabled
or not.
Even prior to my recent change in settings_panel_menu.js,
we were assigning window.location.hash a value that doesn't
have a '#' prefix. This probably doesn't matter too much
for the browser, but it does confuse our own checks about
whether we're redundantly updating browser history.
Now we prefix the settings hash with '#' and we encorce
this convention with a blueslip error.
Just calling update_browser_history is sufficient
here, and we end up short-circuiting some code
in hashchanged():
* we don't need to set state.old_hash, because
that's what update_browser_history does
* we bypass the is_overlay_check, which is always
false in this context
For stream links inside messages (like "#social") we
now use these functions:
hashchange.go_to_location:
We don't need to set href. Relative paths
are more standard, and the url is already
encoded.
hash_util.by_stream_uri:
This saves a step in building the URL.
We call hashchanged.update_browser_history() when
we switch panels. This API short circuits the
hashchanged callback and avoids code churn.
(We weren't actually double rendering, as the downstream
code does nothing at this point, so this is more
just preventig a pitfall and moving to a consistent
API.)
Before this commit, we would sometimes have
the toggler handle clicking or arrowing to
the All tab, but then also rewrite the hash
which caused us to re-process the event.
Now we only call update_browser_history()
in the callback handler from the toggle widget.
There's a bit of refactoring to make this happen,
but the call stacks end up being this:
call toggler.goto(...)
# callback is dispatched
call subs.switch_stream_tab
actually_filter_streams
update_browser_history
While they can share some code, opening the edit panel
for a stream and clearing the panel are pretty different
actions, so we simplify the API for each thing.
You no longer have to pass in booleans, and for the clear
case, you don't have to pass in a bogus node that just
gets ignored.
This fixes a bug where hitting the "n" hotkey was
causing double work related to the hashchange system.
The code is now organized like this:
do_open_create_stream() does the GUI piece
We call the above directly for hash changes.
For in-app actions, whether clicks or hotkeys,
we call open_create_stream(), which delegates
most of the work to do_open_create_stream() but
also updates the hash.
This diff looks a bit more complicated than it really is.
We had a bug where we'd call subs.change_state for
non-streams-related changes. The bug probably barely
impacted customers, since it's hard to get into that
situation unless you're in "Settings", and then the
code mostly did nothing. There's still a deeper issue
of what we actually do want to for settings changes,
but this fix does not address that.
We invert the conditionals related to internal state
changes, so that we can handle internal state changes.
And we make sure to only call subs.change_state if our
"base" is "streams".
This is mostly extracting the code within the `if`
block, as well as setting `base`, which wasn't used
elsewhere.
Also, the `else` no longer calls `is_overlay_hash`,
which was a redundant check.
This is definitely a micro-optimization, but avoiding
creating an extra object speeds up page loads by about
20ms per 1000 streams.
It's slightly sketchy to mutate the value in place, but
the original value never gets used again.
We now let color_data keep its own state for
unused_colors, so that we longer have to pass in
a large list of unused_colors every time we want
to assign a new stream color.
This mostly matters at startup, where we might
be cycling through 5000 streams. We claim all
the unused colors up front.
Each operation now has an upper bound of expensiveness,
where the worst case scenario is basically popping
off the first element of a list of <= 24 colors.
The algorithm is now deterministic, too, to make
it easier to test. It's unclear whether random color
assignment ever had much benefit, and it made unit
testing the algorithm difficult. Now we have 100%
line coverage.
Fixes part of #10902.
Shubham Padia
dipu989
Scott Lee
Tim Abbott
Steve Howell
Marco Burstein
Rishi Gupta
Shubham Dhama