Before this change, we would move "dormant" streams to the bottom
of your stream sidebar, but only if you had 40+ streams.
Now we do this in all cases to be more consistent.
This commit also changes the redraw strategy when we remove rows.
Before this change, we were doing incremental updates, but now we
call build_stream_list to do a complete rebuild. This was partly
motivated by adding the new divider, which would have complicated
the incrememental approach when you removed the last remaining
dormant stream.
The <hr> is supposed to separate the pinned streams from the unpinned
streams, so if the <hr> is the first element (checked by doing
$hr.prev().length === 0), then it means there are no longer any pinned
streams and therefore it isn’t necessary to have a divider.
Fixes: #4395.
The pinned streams were sorted in alphabetic order (i.e. Verona appears
before devel). The reason is that after we plucked pinned streams out from
stream_data.subscribed_streams(), we didn't sort them again, so they
remained in the alphabetic order used in stream_data.
However, we did sort unpinned streams explicitly by using custom compare
function in stream_list.js (by default sort by lowercase stream name,
but when there are more than 40 subscribed streams, sort active streams
first). That's why this issue only relates to pinned streams.
Changes were made to sort pinned streams by lowercase stream name, always,
whether they are active or not (different from unpinned streams).
Tests were added to ensure this overall sort order is correct, i.e.
1. pinned streams are always sorted by lowercase stream name.
2. pinned streams are always before unpinned streams.
3. unpinned streams are sorted by lowercase stream name, if there are more
than 40 subscribed streams, sort active streams at the top, among active
and inactive streams, still sorted by lowercase stream name.
Fixes#3701
In a96fdd18b1, I introduced a few
regressions related to the blue highlighting that happens
in the top left corner for Home, Private messages, Starred
messages, and @-mentions. Basically, we weren't clearing
the highlighting when we thought we were, so Home would stay
blue too long and the other filters wouldn't turn blue.
We went a surprising long time before noticing the regression.
This fix adds a function called deselect_top_left_corner_items()
to clear the blue backgrounds, so that will happen more explicitly.
And then I restored a line of code to pm_list.js that puts the
blue in place when you are in an is:private narrow (vs. a
specific PM narrow).
The fix works by having build_stream_sidebar_row()
automatically update its own unread count when we
build a sidebar row. Currently we rebuild sidebar
rows when we pin/unpin rows.
As an aside, we currently don't really need to rebuild
the sidebar row when we pin, since we're only moving
the DOM, not altering it. But this may change in the
future, so I decided to leave that code path in place.
We may decide to do things in the future like showing
pinned streams with bolder fonts or special icons or
whatever.
Fixes#2902
Some of the work here was done Tomasz Kolek.
When we click on "more conversations" in "Private Messages,"
we call it being "zoomed in." Before this change, when
new PMs arrived, we would rebuild the list and zoom out
again. Now we track the zoomed_in state with a variable.
Also, if you are zoomed in and switch from one PM narrow
to another, we also keep you zoomed in.
This fix also removes some extraneous/redundant code.
Fixes: #2561
I forgot to remove this code in a recent refactoring that copied
this code into activity.js. It should not have caused any errors,
but it's no longer needed.
From subs.js we don't redundantly try to remove an element
from ths sidebar; we just trigger the event.
In stream_list.js we continue to remove the element from
the DOM, and we also remove the widget from our internal
Dict of sidebar rows, so that if we re-subscribe, we know
we'll automatically re-build the widget from the template
and the latest data from stream_data.js.
We used to have hacky code where various functions would call
build_stream_sidebar_row() to get a jQuery object, and then they
would attach the jQuery object to the "sub" object from stream_data.js.
Now build_stream_sidebar_row() localizes the hack of attaching
a UI object to the "sub" object to just one function (and we can
clean this up in a follow-up commit).
Also, the UI object is now a JS object that can close on some useful
state information like the stream name and encapsulate how we
toggle the inactive_stream class.
Finally, we don't have build_stream_sidebar_row() needlessly append
list items to $('#stream_filters') when we know that our callers are
going to re-build the list anyway.
The code removed in this commit added pinned streams to a list
of elems, only to have them added again by the next block of code
(but more concisely). Through some strange quirk of appendTo() this
never created user-facing bugs, but you could clearly see in the console
that it was doing double work.
For cases where we are zoomed in to a stream and then go
to a different narrow (Home, PMs, etc.), we now let
topic_list.zoom_out orchestrate the removal of the topic list
instead of stream_list.zoom_out.
This will help us when we move to a world where topic_list
redraws topic lists on zoom-in/zoom-out, because we won't
waste effort rebuilding lists that are about to be removed.
The flow for topic list zooming is kind of complicated now, but
it's mostly a consequence of the way the UI works.
* stream_list tells topic_list to set up the topic list
click handlers to have callbacks to stream_list
* topic_list click handlers call to stream_list zoom methods
to hide/show all the other streams
* stream_list zoom methods call back to topic_list methods to
redraw topics as needed (this isn't happening yet, but allowing
topic_list.js to know that it's zoomed will set the stage for
this to happen in a more controlled manner)
We no longer use active_stream_name(), which was mostly a
duplicate of narrow.stream(). For nonsensical queries like
"stream:foo stream:bar" the behavior may change slightly here.
We know that we don't handle non-sensical queries particularly
well, but at least if we always go through narrow.stream(),
the behavior will be consistent.
I did test this with some sensible compound narrows, like searching
for a keyword within a stream.
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.)
This change makes most of the logic on set_count() live
on our per-stream topic list widget. We can find the
jQuery object directly now rather than using the
complicated iterate_to_find() method.
This also brought along:
iterate_to_find (copied, see large comment explaining why)
activate_topic (extracted from a one-liner)
set_count (formerly stream_list.set_subject_count)
For get_topic_filter_li, we now pass in stream_li instead of
stream to decouple parent/child responsibilities between the
components.
Also, I made some s/subject/topic/ fixes.
This creates the new topic_list.js module, and the first
function that we extract is topic_list.update_count_in_dom().
This function needed to be decoupled from some non-topic-list
stuff which was overly complicated.
Tim Abbott
Steve Howell
Raghav Jajodia
Brock Whittaker
chao1995
Elliott Jin
KingxBanana
Rafid Aslam
lonerz
Tommy Ip