This change moves most of the logic related to starting and
stopping outbound typing indicators to a new module called
typing_status.js that is heavily unit tested.
While this was in some sense a rewrite, the logic was mostly
inspired by the existing code.
This change does fix one known bug, which is that when we
were changing recipients before (while typing was active), we
were not stopping and starting typing indicators. This was
a fairly minor bug, since usually users leave the compose
box to change recipients, and we would do stop/start under
that scenario. Now we also handle the case where the user
does not leave the compose box to change recipients.
The old code may have had some subtle bugs related to sorting of
ids or stringification or failed Dict lookups. The new data
layer should be more robust. We had some tracebacks recently
from the old code, and they should go away now.
Send typing notification events when user types in the compose box.
Listen for these events and display a notification.
Sending notifications: Notifications are throttled, so that start
notifications are sent every 10 seconds of active typing, and stop
notifications are sent 5 seconds after active typing stops or when the
compose box is closed.
Displaying notifications:
When a typing notification is received, if the current narrow is private
messages or is: pm-with and the user is not the sender,
"Othello is typing..." is displayed underneath the last message. This notification is
removed after 15 seconds. If another notification is received during this period, the
expiration is extended. When a stop notification is received the notification is removed.
Internally, a list of users currently typing is maintained for each
conversation (in a dict). When an event is received the list (for the appropriate
conversation) is updated and the notifications template is re-rendered
based on the narrow information. This template is also re-rendered when
the narrow changes.
Significantly modified by tabbott for clarity.
Fixes#150.
Steve Howell
Arpith Siromoney