Fixes riot-web#4334
When we do a token login, don't carry on with the normal app startup
(transitioning to the loggedIn state etc) - instead tell the app about the
successful login and wait for it to redirect.
Replace onLoadCompleted with onTokenLoginCompleted so that the app can see what
it's supposed to be doing.
MatrixChat is essentially a glorified state machine, with its states partially
determined by the loading, loggedIn and loggingIn state flags. If we actually
make each of the states implied by those flags an explicit 'view', then
everything gets much clearer.
'screen' is overloaded, as it us used for the parameter of `showScreen` (and,
by implication, `state.screenAfterLogin`). Attempt to clear up the confusion by
replacing 'screen' with 'view' and using some constants for the potential
values.
This should be a no-op!
This fixes an unintuitive behaviour where, if you follow a link to
riot.im/app/#/login, we take you to the login page, but not before we've
registered a guest account (or restarted the MatrixClient with the stored
creds).
This actually ends up simplifying some of the startup dance, as we special-case
the registration flows earlier on.
Fix for https://github.com/vector-im/riot-web/issues/4224
Due to the way `MatrixChat` does a state update when the `view_room` dispatch fires and a second update when `RoomViewStore` sends an update, the current event ID and room ID were becoming out of sync. The solution devised was to have the event ID managed by the `RoomViewStore` itself and do any defaulting there (for when we revisit a room that we saved scroll state for previously).
This required a few changes:
- The addition of `update_scroll_state` in `RoomViewStore` allows the `RoomView` to save scroll state for a room before swapping to another one. Previously the caching of scroll state was done in `RoomView`.
- The `view_room` dispatch now accepts an `event_id`, which dictates which event is supposed to be scrolled to in the `MessagePanel` when a new room is viewed. It also accepts `event_offset`, but currently, this isn't passed in by a dispatch in the app, but it is clobbered when loading the default position when an `event_id` isn't specified. Finally, `highlighted` was added to distinguish whether the initial event being scrolled to is also highlighted. This flag is also used by `viewRoom` in `MatrixChat` in order to decide whether to `notifyNewScreen` with the specified `event_id`.
This reverts commit c3d37c1ff9.
This commit was introducing a bug where no rooms would be shown if
you want straight to /#/login and logged in (because this causes
a guest session to be created but the indexeddb store not to be
cleared, so the new login picks up the stale indexedb sync data.
