metamask-extension/ui/pages/confirm-encryption-public-key/confirm-encryption-public-key.component.js

import React, { Component } from 'react';
import PropTypes from 'prop-types';

import AccountListItem from '../../components/app/account-list-item';
import Button from '../../components/ui/button';
import Identicon from '../../components/ui/identicon';

import { ENVIRONMENT_TYPE_NOTIFICATION } from '../../../shared/constants/app';
import { getEnvironmentType } from '../../../app/scripts/lib/util';
import { conversionUtil } from '../../helpers/utils/conversion-util';

export default class ConfirmEncryptionPublicKey extends Component {
  static contextTypes = {
    t: PropTypes.func.isRequired,
    metricsEvent: PropTypes.func.isRequired,
  };

  static propTypes = {
    fromAccount: PropTypes.shape({
      address: PropTypes.string.isRequired,
      balance: PropTypes.string,
      name: PropTypes.string,
    }).isRequired,
    clearConfirmTransaction: PropTypes.func.isRequired,
    cancelEncryptionPublicKey: PropTypes.func.isRequired,
    encryptionPublicKey: PropTypes.func.isRequired,
    conversionRate: PropTypes.number,
    history: PropTypes.object.isRequired,
    requesterAddress: PropTypes.string,
    txData: PropTypes.object,
    domainMetadata: PropTypes.object,
    mostRecentOverviewPage: PropTypes.string.isRequired,
  };

  state = {
    fromAccount: this.props.fromAccount,
  };

  componentDidMount = () => {
    if (
      getEnvironmentType(window.location.href) === ENVIRONMENT_TYPE_NOTIFICATION
    ) {
      window.addEventListener('beforeunload', this._beforeUnload);
    }
  };

  componentWillUnmount = () => {
    this._removeBeforeUnload();
  };

  _beforeUnload = async (event) => {
    const {
      clearConfirmTransaction,
      cancelEncryptionPublicKey,
      txData,
    } = this.props;
    const { metricsEvent } = this.context;
    await cancelEncryptionPublicKey(txData, event);
    metricsEvent({
      eventOpts: {
        category: 'Messages',
        action: 'Encryption public key Request',
        name: 'Cancel Via Notification Close',
      },
    });
    clearConfirmTransaction();
  };

  _removeBeforeUnload = () => {
    if (
      getEnvironmentType(window.location.href) === ENVIRONMENT_TYPE_NOTIFICATION
    ) {
      window.removeEventListener('beforeunload', this._beforeUnload);
    }
  };

  renderHeader = () => {
    return (
      <div className="request-encryption-public-key__header">
        <div className="request-encryption-public-key__header-background" />

        <div className="request-encryption-public-key__header__text">
          {this.context.t('encryptionPublicKeyRequest')}
        </div>

        <div className="request-encryption-public-key__header__tip-container">
          <div className="request-encryption-public-key__header__tip" />
        </div>
      </div>
    );
  };

  renderAccount = () => {
    const { fromAccount } = this.state;
    const { t } = this.context;

    return (
      <div className="request-encryption-public-key__account">
        <div className="request-encryption-public-key__account-text">
          {`${t('account')}:`}
        </div>

        <div className="request-encryption-public-key__account-item">
          <AccountListItem account={fromAccount} />
        </div>
      </div>
    );
  };

  renderBalance = () => {
    const { conversionRate } = this.props;
    const { t } = this.context;
    const {
      fromAccount: { balance },
    } = this.state;

    const balanceInEther = conversionUtil(balance, {
      fromNumericBase: 'hex',
      toNumericBase: 'dec',
      fromDenomination: 'WEI',
      numberOfDecimals: 6,
      conversionRate,
    });

    return (
      <div className="request-encryption-public-key__balance">
        <div className="request-encryption-public-key__balance-text">
          {`${t('balance')}:`}
        </div>
        <div className="request-encryption-public-key__balance-value">
          {`${balanceInEther} ETH`}
        </div>
      </div>
    );
  };

  renderRequestIcon = () => {
    const { requesterAddress } = this.props;

    return (
      <div className="request-encryption-public-key__request-icon">
        <Identicon diameter={40} address={requesterAddress} />
      </div>
    );
  };

  renderAccountInfo = () => {
    return (
      <div className="request-encryption-public-key__account-info">
        {this.renderAccount()}
        {this.renderRequestIcon()}
        {this.renderBalance()}
      </div>
    );
  };

  renderBody = () => {
    const { domainMetadata, txData } = this.props;
    const { t } = this.context;

    const originMetadata = domainMetadata[txData.origin];
    const notice = t('encryptionPublicKeyNotice', [txData.origin]);
    const name = originMetadata?.hostname || txData.origin;

    return (
      <div className="request-encryption-public-key__body">
        {this.renderAccountInfo()}
        <div className="request-encryption-public-key__visual">
          <section>
            {originMetadata?.icon ? (
              <img
                className="request-encryption-public-key__visual-identicon"
                src={originMetadata.icon}
                alt=""
              />
            ) : (
              <i className="request-encryption-public-key__visual-identicon--default">
                {name.charAt(0).toUpperCase()}
              </i>
            )}
            <div className="request-encryption-public-key__notice">
              {notice}
            </div>
          </section>
        </div>
      </div>
    );
  };

  renderFooter = () => {
    const {
      cancelEncryptionPublicKey,
      clearConfirmTransaction,
      encryptionPublicKey,
      history,
      mostRecentOverviewPage,
      txData,
    } = this.props;
    const { t, metricsEvent } = this.context;

    return (
      <div className="request-encryption-public-key__footer">
        <Button
          type="default"
          large
          className="request-encryption-public-key__footer__cancel-button"
          onClick={async (event) => {
            this._removeBeforeUnload();
            await cancelEncryptionPublicKey(txData, event);
            metricsEvent({
              eventOpts: {
                category: 'Messages',
                action: 'Encryption public key Request',
                name: 'Cancel',
              },
            });
            clearConfirmTransaction();
            history.push(mostRecentOverviewPage);
          }}
        >
          {this.context.t('cancel')}
        </Button>
        <Button
          type="secondary"
          large
          className="request-encryption-public-key__footer__sign-button"
          onClick={async (event) => {
            this._removeBeforeUnload();
            await encryptionPublicKey(txData, event);
            this.context.metricsEvent({
              eventOpts: {
                category: 'Messages',
                action: 'Encryption public key Request',
                name: 'Confirm',
              },
            });
            clearConfirmTransaction();
            history.push(mostRecentOverviewPage);
          }}
        >
          {t('provide')}
        </Button>
      </div>
    );
  };

  render = () => {
    return (
      <div className="request-encryption-public-key__container">
        {this.renderHeader()}
        {this.renderBody()}
        {this.renderFooter()}
      </div>
    );
  };
}