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

import React from 'react';

import { PriorityLevels } from '../../../../../shared/constants/gas';
import { decGWEIToHexWEI } from '../../../../../shared/modules/conversion.utils';
import { useTransactionModalContext } from '../../../../contexts/transaction-modal';
import { useGasFeeContext } from '../../../../contexts/gasFee';
import { useTransactionEventFragment } from '../../../../hooks/useTransactionEventFragment';
import { useI18nContext } from '../../../../hooks/useI18nContext';
import Button from '../../../ui/button';

import { useAdvancedGasFeePopoverContext } from '../context';

const AdvancedGasFeeSaveButton = () => {
  const { closeModal } = useTransactionModalContext();
  const { updateTransactionEventFragment } = useTransactionEventFragment();
  const { updateTransaction } = useGasFeeContext();
  const t = useI18nContext();
  const { gasLimit, hasErrors, maxFeePerGas, maxPriorityFeePerGas } =
    useAdvancedGasFeePopoverContext();

  const onSave = () => {
    updateTransaction({
      estimateUsed: PriorityLevels.custom,
      maxFeePerGas: decGWEIToHexWEI(maxFeePerGas),
      maxPriorityFeePerGas: decGWEIToHexWEI(maxPriorityFeePerGas),
      gasLimit,
    });
    updateTransactionEventFragment({
      properties: {
        gas_edit_type: 'advanced',
      },
    });
    closeModal(['advancedGasFee', 'editGasFee']);
  };

  return (
    <Button type="primary" disabled={hasErrors} onClick={onSave}>
      {t('save')}
    </Button>
  );
};

export default AdvancedGasFeeSaveButton;