renderItem = (validator: ValidatorAppValidator, validatorIdx: number) => {
    return (
      <ValidatorRow
        currency={account.currency}
        active={chosenVoteAccAddr === validator.voteAccount}
        showStake={validatorIdx !== 0}
        onClick={onChangeValidator}
        key={validator.voteAccount}
        validator={validator}
        unit={unit}
      ></ValidatorRow>
    );
  }
auto focus first input on mount