const Component = require('react').Component const h = require('react-hyperscript') const inherits = require('util').inherits 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 log = require('loglevel') module.exports = EnsInput inherits(EnsInput, Component) function EnsInput () { Component.call(this) } EnsInput.prototype.render = function () { const props = this.props function onInputChange() { const network = this.props.network const networkHasEnsSupport = getNetworkEnsSupport(network) if (!networkHasEnsSupport) return const recipient = document.querySelector('input[name="address"]').value if (recipient.match(ensRE) === null) { return this.setState({ loadingEns: false, ensResolution: null, ensFailure: null, }) } this.setState({ loadingEns: true, }) this.checkName() } return ( h('div', { style: { width: '100%' }, }, [ h('input.large-input', { name: props.name, placeholder: props.placeholder, list: 'addresses', onChange: onInputChange.bind(this), }), // The address book functionality. h('datalist#addresses', [ // Corresponds to the addresses owned. Object.keys(props.identities).map((key) => { const identity = props.identities[key] return h('option', { value: identity.address, label: identity.name, key: identity.address, }) }), // Corresponds to previously sent-to addresses. props.addressBook.map((identity) => { return h('option', { value: identity.address, label: identity.name, key: identity.address, }) }), ]), 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 () { const recipient = document.querySelector('input[name="address"]').value 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('No address has been set for this name.') if (address !== ensResolution) { this.setState({ loadingEns: false, ensResolution: address, nickname: recipient.trim(), hoverText: address + '\nClick to Copy', 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', { title: hoverText, style: { position: 'absolute', padding: '9px', transform: 'translatex(-40px)', }, }, 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]) }