For the most part the changes are taking the "static propTypes" declaration off
of components and declaring them as Flow types. Sometimes to support flow some
method signatures had to be added. There are some exceptions in which more had
to be done to tame the beast:
- AbstractVideoTrack: put in additional truthy checks for videoTrack.
- Video: add truthy checks for the _videoElement ref.
- shouldRenderVideoTrack function: Some component could pass null for the
videoTrack argument and Flow wanted that called out explicitly.
- DisplayName: Add a truthy check for the input ref before acting on it.
- NumbersList: Move array checks inline for Flow to comprehend array methods
could be called. Add type checks in the Object.entries loop as the value is
assumed to be a mixed type by Flow.
- AbstractToolbarButton: add additional truthy check for passed in type.
- Change "features/chat" to support listening for new chat messages
and storing them, removing that logic from conference.js.
- Combine chat.scss and side_toolbar_container.css, and remove unused
scss files. Chat is the only side panel so the two concepts have
been merged.
- Remove direct access to the chat feature from non-react and non-redux
flows.
- Modify the i18n translate function to take in an options object.
By default the option "wait" is set to true, but that causes
components to mount after the parent has been notified of
an update, which means autoscrolling down to the latest rendered
messages does not work. With "wait" set to false, the children
will mount and then the parent will trigger componentDidUpdate.
- Create react components for chat. Chat is the side panel
plus the entiren chat feature. ChatInput is a child of Chat and
is used for composing messages. ChatMessage displays one message
and extends PureComponent to limit re-renders.
- Fix a bug where the toolbar was not showing automatically when
chat is closed and a new message is received.
- Import react-transition-group to time the animation of the
side panel showing/hiding and unmounting the Chat component.
This gets around the issue of having to control autofocus if the
component were always mounted and visibility toggled, but
introduces not being able to store previous scroll state
(without additional work or re-work).