const Component = require('react').Component const h = require('react-hyperscript') const inherits = require('util').inherits const extend = require('xtend') const debounce = require('debounce') const copyToClipboard = require('copy-to-clipboard') const ENS = require('ethjs-ens') const networkMap = require('ethjs-ens/lib/network-map.json') const ensRE = /.+\..+$/ const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000' const t = require('../../i18n') const ToAutoComplete = require('./send/to-autocomplete') module.exports = EnsInput inherits(EnsInput, Component) function EnsInput () { Component.call(this) } EnsInput.prototype.render = function () { const props = this.props const opts = extend(props, { list: 'addresses', onChange: (recipient) => { const network = this.props.network const networkHasEnsSupport = getNetworkEnsSupport(network) if (!networkHasEnsSupport) return props.onChange(recipient) if (recipient.match(ensRE) === null) { return this.setState({ loadingEns: false, ensResolution: null, ensFailure: null, }) } this.setState({ loadingEns: true, }) this.checkName(recipient) }, }) return h('div', { style: { width: '100%', position: 'relative' }, }, [ h(ToAutoComplete, { ...opts }), this.ensIcon(), ]) } EnsInput.prototype.componentDidMount = function () { const network = this.props.network const networkHasEnsSupport = getNetworkEnsSupport(network) this.setState({ ensResolution: ZERO_ADDRESS }) if (networkHasEnsSupport) { const provider = global.ethereumProvider this.ens = new ENS({ provider, network }) this.checkName = debounce(this.lookupEnsName.bind(this), 200) } } EnsInput.prototype.lookupEnsName = function (recipient) { const { ensResolution } = this.state log.info(`ENS attempting to resolve name: ${recipient}`) this.ens.lookup(recipient.trim()) .then((address) => { if (address === ZERO_ADDRESS) throw new Error(t('noAddressForName')) if (address !== ensResolution) { this.setState({ loadingEns: false, ensResolution: address, nickname: recipient.trim(), hoverText: address + '\n' + t('clickCopy'), ensFailure: false, }) } }) .catch((reason) => { log.error(reason) return this.setState({ loadingEns: false, ensResolution: ZERO_ADDRESS, ensFailure: true, hoverText: reason.message, }) }) } EnsInput.prototype.componentDidUpdate = function (prevProps, prevState) { const state = this.state || {} const ensResolution = state.ensResolution // If an address is sent without a nickname, meaning not from ENS or from // the user's own accounts, a default of a one-space string is used. const nickname = state.nickname || ' ' if (prevState && ensResolution && this.props.onChange && ensResolution !== prevState.ensResolution) { this.props.onChange(ensResolution, nickname) } } EnsInput.prototype.ensIcon = function (recipient) { const { hoverText } = this.state || {} return h('span.#ensIcon', { title: hoverText, style: { position: 'absolute', top: '16px', left: '-25px', }, }, this.ensIconContents(recipient)) } EnsInput.prototype.ensIconContents = function (recipient) { const { loadingEns, ensFailure, ensResolution } = this.state || { ensResolution: ZERO_ADDRESS} if (loadingEns) { return h('img', { src: 'images/loading.svg', style: { width: '30px', height: '30px', transform: 'translateY(-6px)', }, }) } if (ensFailure) { return h('i.fa.fa-warning.fa-lg.warning') } if (ensResolution && (ensResolution !== ZERO_ADDRESS)) { return h('i.fa.fa-check-circle.fa-lg.cursor-pointer', { style: { color: 'green' }, onClick: (event) => { event.preventDefault() event.stopPropagation() copyToClipboard(ensResolution) }, }) } } function getNetworkEnsSupport (network) { return Boolean(networkMap[network]) }