void didUpdateWidget(StatefulWidget statefulWidget)
{
var oldWidget = statefulWidget as FutureBuilder <T>;
if (oldWidget == null)
{
return;
}
base.didUpdateWidget(oldWidget);
if (oldWidget.future != widget.future)
{
if (_activeCallbackIdentity != null)
{
_unsubscribe();
_snapshot = _snapshot.inState(ConnectionState.none);
}
_subscribe();
}
}
AsyncSnapshot <T> afterDone(AsyncSnapshot <T> current) => current.inState(ConnectionState.done);
AsyncSnapshot <T> afterDisconnected(AsyncSnapshot <T> current) => current.inState(ConnectionState.none);
AsyncSnapshot <T> afterConnected(AsyncSnapshot <T> current) => current.inState(ConnectionState.waiting);