On mobile, the ringing status indicator is supposed to display in the header rather than on a tile. The exact layout differs between Android and iOS. To get it right I had to refactor AppBar to use CSS grid templates.
(Also, I changed my mind about the exact ringing data I needed out of CallViewModel - sorry. A little move of the ringtone audio renderer into its own component was necessary to accommodate that.)
I found our code's internal model of ringing a little overgrown (it had superfluous states like 'unknown') and difficult to extend with metadata or callbacks relating to ring attempts. By modeling ringing instead as a stream of ring attempts, where each attempt has an intent, a recipient, and an eventual outcome (accept/decline/timeout), I find it more natural to work with.
This makes room for a future 'try again' callback to allow ringing someone again after a timeout, and also forced me to look for a simpler solution to the duplicate leave sound effects. I exposed the intent of the ringing attempt to the call UI so I can later use it in the header.
By adding viewport-fit=cover to the <meta name="viewport"> header, the page now requests to be displayed edge-to-edge across the entire screen. This gives us control over what we display around camera cut-outs and system navigation UI, if the user agent supports it. I then adjusted the styles of various UI elements to ensure that they still lie within the screen's safe area.
They were not properly being contained to where the MediaView is supposed to appear, causing them to all stack up on the first screen share in the spotlight tile.
6667fc54c0 changed this CSS selector that shows buttons on hover to only target the buttons in the bottom right corner of the spotlight tile, causing the forward/back buttons to stay invisible.
In landscape orientation the button would be buried underneath the footer, which would block interaction with it. This commit changes the footer to not show in cases where a button has been pressed.
Timo and I agreed previously that we should ditch the class pattern for view models and instead have them be interfaces which are simply created by functions. They're more straightforward to write, mock, and instantiate this way.
The code for media view models and media items is pretty much the last remaining instance of the class pattern. Since I was about to introduce a new media view model for ringing, I wanted to get this refactor out of the way first rather than add to the technical debt.
This refactor also makes things a little easier for https://github.com/element-hq/element-call/pull/3747 by extracting volume controls into their own module.
once)
The local jwt token needs to be aquired via the right endpoint. The
endpoint defines how our rtcBackendIdentity is computed. Based on us
using sticky events or state events we also need to use the right
endpoint. This cannot be done generically in the connection manager. The
jwt token now is computed in the localTransport and the resolved sfu
config is passed to the connection manager.
Add JWT endpoint version and SFU config support Pin matrix-js-sdk to a
specific commit and update dev auth image tag. Propagate SFU config and
JWT endpoint choice through local transport, ConnectionManager and
Connection; add JwtEndpointVersion enum and LocalTransportWithSFUConfig
type. Add NO_MATRIX_2 auth error and locale string, thread
rtcBackendIdentity through UI props, and include related test, CSS and
minor imports updates
On second glance, the way that we determined a media tile to be 'waiting for media' was too implicit for my taste. It would appear on a surface reading to depend on whether a participant was currently publishing any video. But in reality, the 'video' object was always defined as long as a LiveKit participant existed, so in reality it depended on just the participant. We should show this relationship more explicitly by moving the computation into the view model, where it can depend on the participant directly.
