metamask-extension/ui/app/pages/settings/contact-list-tab/view-contact/view-contact.component.js

import React, { PureComponent } from 'react'
import PropTypes from 'prop-types'
import Identicon from '../../../../components/ui/identicon'
import Copy from '../../../../components/ui/icon/copy-icon.component'

import Button from '../../../../components/ui/button/button.component'
import copyToClipboard from 'copy-to-clipboard'

function quadSplit (address) {
  return '0x ' + address.slice(2).match(/.{1,4}/g).join(' ')
}

export default class ViewContact extends PureComponent {

  static contextTypes = {
    t: PropTypes.func,
  }

  static propTypes = {
    name: PropTypes.string,
    address: PropTypes.string,
    history: PropTypes.object,
    checkSummedAddress: PropTypes.string,
    memo: PropTypes.string,
    editRoute: PropTypes.string,
  }

  render () {
    const { t } = this.context
    const { history, name, address, checkSummedAddress, memo, editRoute } = this.props

    return (
      <div className="settings-page__content-row">
        <div className="settings-page__content-item">
          <div className="settings-page__header address-book__header">
            <Identicon address={address} diameter={60} />
            <div className="address-book__header__name">{ name }</div>
          </div>
          <div className="address-book__view-contact__group">
            <Button
              type="secondary"
              onClick={() => {
                history.push(`${editRoute}/${address}`)
              }}
            >
              {t('edit')}
            </Button>
          </div>
          <div className="address-book__view-contact__group">
            <div className="address-book__view-contact__group__label">
              { t('ethereumPublicAddress') }
            </div>
            <div className="address-book__view-contact__group__value">
              <div
                className="address-book__view-contact__group__static-address"
              >
                { quadSplit(checkSummedAddress) }
              </div>
              <button
                className="address-book__view-contact__group__static-address--copy-icon"
                onClick={() => copyToClipboard(checkSummedAddress)}
              >
                <Copy size={20} color="#3098DC" />
              </button>
            </div>
          </div>
          <div className="address-book__view-contact__group">
            <div className="address-book__view-contact__group__label--capitalized">
              { t('memo') }
            </div>
            <div className="address-book__view-contact__group__static-address">
              { memo }
            </div>
          </div>
        </div>
      </div>
    )
  }
}