build method

@override WalletActivityState build()

Initialize a Notifier.

It is safe to use Ref.watch or Ref.listen inside this method.

If a dependency of this Notifier (when using Ref.watch) changes, then build will be re-executed. On the other hand, the Notifier will not be recreated. Its instance will be preserved between executions of build.

If this method throws, reading this provider will rethrow the error.

Implementation

@override
WalletActivityState build() {
  _disposed = false;
  ref.onDispose(() => _disposed = true);
  final session = ref.watch(walletSessionProvider);
  if (session == null) {
    // No wallet — the screen renders the not-set-up state and does not watch
    // this. A neutral loading is the honest value.
    return const WalletActivityState();
  }
  // A fresh (re)build (e.g. the rescan session swap) supersedes any in-flight
  // continuation captured before it — they see a stale generation and no-op.
  final gen = ++_generation;
  unawaited(_loadFirst(session, gen));
  return const WalletActivityState(phase: WalletActivityPhase.loading);
}