metamask-extension/ui/components/app/advanced-gas-fee-popover/advanced-gas-fee-save/advanced-gas-fee-save.js

import React from 'react';

import { PRIORITY_LEVELS } from '../../../../../shared/constants/gas';
import { useTransactionModalContext } from '../../../../contexts/transaction-modal';
import { useGasFeeContext } from '../../../../contexts/gasFee';
import Button from '../../../ui/button';
import I18nValue from '../../../ui/i18n-value';

import { useAdvanceGasFeePopoverContext } from '../context';
import { decGWEIToHexWEI } from '../../../../../shared/modules/conversion.utils';

const AdvancedGasFeeSaveButton = () => {
  const { closeModal } = useTransactionModalContext();
  const { updateTransaction } = useGasFeeContext();
  const {
    isDirty,
    maxFeePerGas,
    maxPriorityFeePerGas,
  } = useAdvanceGasFeePopoverContext();

  const onSave = () => {
    updateTransaction(
      PRIORITY_LEVELS.CUSTOM,
      decGWEIToHexWEI(maxFeePerGas),
      decGWEIToHexWEI(maxPriorityFeePerGas),
    );
    closeModal('advancedGasFee');
  };

  return (
    <Button type="primary" disabled={!isDirty} onClick={onSave}>
      <I18nValue messageKey="save" />
    </Button>
  );
};

export default AdvancedGasFeeSaveButton;