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

import React, { PureComponent } from 'react'
import PropTypes from 'prop-types'
import Identicon from '../../../../components/ui/identicon'
import TextField from '../../../../components/ui/text-field'
import { CONTACT_LIST_ROUTE } from '../../../../helpers/constants/routes'
import { isValidAddress, isValidENSAddress } from '../../../../helpers/utils/util'
import EnsInput from '../../../../pages/send/send-content/add-recipient/ens-input'
import PageContainerFooter from '../../../../components/ui/page-container/page-container-footer'
import debounce from 'lodash.debounce'

export default class AddContact extends PureComponent {

  static contextTypes = {
    t: PropTypes.func,
  }

  static propTypes = {
    addToAddressBook: PropTypes.func,
    history: PropTypes.object,
    scanQrCode: PropTypes.func,
    qrCodeData: PropTypes.object,
    qrCodeDetected: PropTypes.func,
  }

  state = {
    nickname: '',
    ethAddress: '',
    ensAddress: '',
    error: '',
    ensError: '',
  }

  constructor (props) {
    super(props)
    this.dValidate = debounce(this.validate, 1000)
  }

  componentWillReceiveProps (nextProps) {
    if (nextProps.qrCodeData) {
      if (nextProps.qrCodeData.type === 'address') {
        const scannedAddress = nextProps.qrCodeData.values.address.toLowerCase()
        const currentAddress = this.state.ensAddress || this.state.ethAddress
        if (currentAddress.toLowerCase() !== scannedAddress) {
          this.setState({ ethAddress: scannedAddress, ensAddress: '' })
          // Clean up QR code data after handling
          this.props.qrCodeDetected(null)
        }
      }
    }
  }

  validate = address => {
    const valid = isValidAddress(address)
    const validEnsAddress = isValidENSAddress(address)
    if (valid || validEnsAddress || address === '') {
      this.setState({ error: '', ethAddress: address })
    } else {
      this.setState({ error: 'Invalid Address' })
    }
  }

  renderInput () {
    return (
      <EnsInput
        className="send__to-row"
        scanQrCode={_ => { this.props.scanQrCode() }}
        onChange={this.dValidate}
        onPaste={text => this.setState({ ethAddress: text })}
        onReset={() => this.setState({ ethAddress: '', ensAddress: '' })}
        updateEnsResolution={address => {
          this.setState({ ensAddress: address, error: '', ensError: '' })
        }}
        updateEnsResolutionError={message => this.setState({ ensError: message })}
      />
    )
  }

  render () {
    const { t } = this.context
    const { history, addToAddressBook } = this.props

    const errorToRender = this.state.ensError || this.state.error

    return (
      <div className="settings-page__content-row address-book__add-contact">
        {this.state.ensAddress && <div className="address-book__view-contact__group">
            <Identicon address={this.state.ensAddress} diameter={60} />
            <div className="address-book__view-contact__group__value">
              { this.state.ensAddress }
            </div>
        </div>}
        <div className="address-book__add-contact__content">
            <div className="address-book__view-contact__group">
            <div className="address-book__view-contact__group__label">
                { t('userName') }
            </div>
            <TextField
              type="text"
              id="nickname"
              value={this.state.newName}
              onChange={e => this.setState({ newName: e.target.value })}
              fullWidth
              margin="dense"
            />
          </div>

          <div className="address-book__view-contact__group">
            <div className="address-book__view-contact__group__label">
              { t('ethereumPublicAddress') }
            </div>
            { this.renderInput() }
            { errorToRender && <div className="address-book__add-contact__error">{errorToRender}</div>}
          </div>
        </div>
        <PageContainerFooter
          cancelText={this.context.t('cancel')}
          disabled={Boolean(this.state.error)}
          onSubmit={() => {
            addToAddressBook(this.state.ensAddress || this.state.ethAddress, this.state.newName)
            history.push(CONTACT_LIST_ROUTE)
          }}
          onCancel={() => {
            history.push(CONTACT_LIST_ROUTE)
          }}
          submitText={this.context.t('save')}
          submitButtonType={'confirm'}
        />
      </div>
    )
  }
}