In the first cut at topic zoom, I was re-rendering the
streams list, but this created glitches with orphaned
list items. The reproducible bug was that unread counts
on unshown streams weren't updating.
In the new approach, I keep the elements more permanent, and
I just hide and show them as needed, either through jQuery
show/hide or permanent CSS selectors.
I got rid of toggle_zoom(), so that we just explicitly zoom
in and zoom out in all situations. In particular, when we
narrow, it's more clear now that only stay zoomed in when
we're narrowing to the same stream as before (including topic
narrows within that stream).
When you zoom in, the number of topics is no longer limited
to 30, since that was kind of arbitrary anyway. (In practice,
the number of topics is usually well under 30, anyway, due to
the way we track them on the client.)
(imported from commit 5b6c143dee9ba9fe557d8cc36335ff28efb4b0de)
This link lets you zoom in to more topics. We only show it if
there are topics that we had to hide to respect the max-5 limit
along with other rules of when you show topics.
This is feature flagged to staging only.
(imported from commit 9915004ec2eb3df7416fe45c0e60cebcd7fecfea)
The first menu option supported is to narrow to the topic.
The chevron only shows up if you turn on feature_flags.muting.
(imported from commit 17482f538a6d3e4ff96a36c042bad972d34f4b11)
In particular:
* Pull the count containers out of the containers that cut off overflow text
* Make them lozenge-like
* Add logic for shortening the overflow container when a count container is
present
(imported from commit a2b3d237cbfe4fadfbbc3a931d2de85dfba10d04)
Umair Khan
Jessica McKellar
Steve Howell
Waseem Daher
Allen Rabinovich
Tim Abbott