const Component = require('react').Component const h = require('react-hyperscript') const inherits = require('util').inherits const actions = require('../actions') const clone = require('clone') const ethUtil = require('ethereumjs-util') const BN = ethUtil.BN const hexToBn = require('../../../app/scripts/lib/hex-to-bn') const util = require('../util') const MiniAccountPanel = require('./mini-account-panel') const Copyable = require('./copyable') const EthBalance = require('./eth-balance') const addressSummary = util.addressSummary const nameForAddress = require('../../lib/contract-namer') const BNInput = require('./bn-as-decimal-input') const MIN_GAS_PRICE_GWEI_BN = new BN(2) const GWEI_FACTOR = new BN(1e9) const MIN_GAS_PRICE_BN = MIN_GAS_PRICE_GWEI_BN.mul(GWEI_FACTOR) const MIN_GAS_LIMIT_BN = new BN(21000) module.exports = PendingTx inherits(PendingTx, Component) function PendingTx () { Component.call(this) this.state = { valid: true, txData: null, } } PendingTx.prototype.render = function () { const props = this.props const { currentCurrency, blockGasLimit } = props const conversionRate = props.conversionRate const txMeta = this.gatherTxMeta() const txParams = txMeta.txParams || {} // Account Details const address = txParams.from || props.selectedAddress const identity = props.identities[address] || { address: address } const account = props.accounts[address] const balance = account ? account.balance : '0x0' // recipient check const isValidAddress = !txParams.to || util.isValidAddress(txParams.to) // Gas const gas = txParams.gas const gasBn = hexToBn(gas) const gasLimit = new BN(parseInt(blockGasLimit)) const safeGasLimit = this.bnMultiplyByFraction(gasLimit, 19, 20).toString(10) // Gas Price const gasPrice = txParams.gasPrice || MIN_GAS_PRICE_BN.toString(16) const gasPriceBn = hexToBn(gasPrice) const txFeeBn = gasBn.mul(gasPriceBn) const valueBn = hexToBn(txParams.value) const maxCost = txFeeBn.add(valueBn) const dataLength = txParams.data ? (txParams.data.length - 2) / 2 : 0 const balanceBn = hexToBn(balance) const insufficientBalance = balanceBn.lt(maxCost) this.inputs = [] return ( h('div', { key: txMeta.id, }, [ h('form#pending-tx-form', { onSubmit: this.onSubmit.bind(this), }, [ // tx info h('div', [ h('.flex-row.flex-center', { style: { maxWidth: '100%', }, }, [ h(MiniAccountPanel, { imageSeed: address, picOrder: 'right', }, [ h('span.font-small', { style: { fontFamily: 'Montserrat Bold, Montserrat, sans-serif', }, }, identity.name), h(Copyable, { value: ethUtil.toChecksumAddress(address), }, [ h('span.font-small', { style: { fontFamily: 'Montserrat Light, Montserrat, sans-serif', }, }, addressSummary(address, 6, 4, false)), ]), h('span.font-small', { style: { fontFamily: 'Montserrat Light, Montserrat, sans-serif', }, }, [ h(EthBalance, { value: balance, conversionRate, currentCurrency, inline: true, labelColor: '#F7861C', }), ]), ]), forwardCarrat(), this.miniAccountPanelForRecipient(), ]), h('style', ` .table-box { margin: 7px 0px 0px 0px; width: 100%; } .table-box .row { margin: 0px; background: rgb(236,236,236); display: flex; justify-content: space-between; font-family: Montserrat Light, sans-serif; font-size: 13px; padding: 5px 25px; } .table-box .row .value { font-family: Montserrat Regular; } `), h('.table-box', [ // Ether Value // Currently not customizable, but easily modified // in the way that gas and gasLimit currently are. h('.row', [ h('.cell.label', 'Amount'), h(EthBalance, { value: txParams.value, currentCurrency, conversionRate }), ]), // Gas Limit (customizable) h('.cell.row', [ h('.cell.label', 'Gas Limit'), h('.cell.value', { }, [ h(BNInput, { name: 'Gas Limit', value: gasBn, precision: 0, scale: 0, // The hard lower limit for gas. min: MIN_GAS_LIMIT_BN.toString(10), max: safeGasLimit, suffix: 'UNITS', style: { position: 'relative', top: '5px', }, onChange: this.gasLimitChanged.bind(this), ref: (hexInput) => { this.inputs.push(hexInput) }, }), ]), ]), // Gas Price (customizable) h('.cell.row', [ h('.cell.label', 'Gas Price'), h('.cell.value', { }, [ h(BNInput, { name: 'Gas Price', value: gasPriceBn, precision: 9, scale: 9, suffix: 'GWEI', min: MIN_GAS_PRICE_GWEI_BN.toString(10), style: { position: 'relative', top: '5px', }, onChange: this.gasPriceChanged.bind(this), ref: (hexInput) => { this.inputs.push(hexInput) }, }), ]), ]), // Max Transaction Fee (calculated) h('.cell.row', [ h('.cell.label', 'Max Transaction Fee'), h(EthBalance, { value: txFeeBn.toString(16), currentCurrency, conversionRate }), ]), h('.cell.row', { style: { fontFamily: 'Montserrat Regular', background: 'white', padding: '10px 25px', }, }, [ h('.cell.label', 'Max Total'), h('.cell.value', { style: { display: 'flex', alignItems: 'center', }, }, [ h(EthBalance, { value: maxCost.toString(16), currentCurrency, conversionRate, inline: true, labelColor: 'black', fontSize: '16px', }), ]), ]), // Data size row: h('.cell.row', { style: { background: '#f7f7f7', paddingBottom: '0px', }, }, [ h('.cell.label'), h('.cell.value', { style: { fontFamily: 'Montserrat Light', fontSize: '11px', }, }, `Data included: ${dataLength} bytes`), ]), ]), // End of Table ]), h('style', ` .conf-buttons button { margin-left: 10px; text-transform: uppercase; } `), txMeta.simulationFails ? h('.error', { style: { marginLeft: 50, fontSize: '0.9em', }, }, 'Transaction Error. Exception thrown in contract code.') : null, !isValidAddress ? h('.error', { style: { marginLeft: 50, fontSize: '0.9em', }, }, 'Recipient address is invalid. Sending this transaction will result in a loss of ETH.') : null, insufficientBalance ? h('span.error', { style: { marginLeft: 50, fontSize: '0.9em', }, }, 'Insufficient balance for transaction') : null, // send + cancel h('.flex-row.flex-space-around.conf-buttons', { style: { display: 'flex', justifyContent: 'flex-end', margin: '14px 25px', }, }, [ insufficientBalance ? h('button.btn-green', { onClick: props.buyEth, }, 'Buy Ether') : null, h('button', { onClick: (event) => { this.resetGasFields() event.preventDefault() }, }, 'Reset'), // Accept Button h('input.confirm.btn-green', { type: 'submit', value: 'ACCEPT', style: { marginLeft: '10px' }, disabled: insufficientBalance || !this.state.valid || !isValidAddress, }), h('button.cancel.btn-red', { onClick: props.cancelTransaction, }, 'Reject'), ]), ]), ]) ) } PendingTx.prototype.miniAccountPanelForRecipient = function () { const props = this.props const txData = props.txData const txParams = txData.txParams || {} const isContractDeploy = !('to' in txParams) // If it's not a contract deploy, send to the account if (!isContractDeploy) { return h(MiniAccountPanel, { imageSeed: txParams.to, picOrder: 'left', }, [ h('span.font-small', { style: { fontFamily: 'Montserrat Bold, Montserrat, sans-serif', }, }, nameForAddress(txParams.to, props.identities)), h(Copyable, { value: ethUtil.toChecksumAddress(txParams.to), }, [ h('span.font-small', { style: { fontFamily: 'Montserrat Light, Montserrat, sans-serif', }, }, addressSummary(txParams.to, 6, 4, false)), ]), ]) } else { return h(MiniAccountPanel, { picOrder: 'left', }, [ h('span.font-small', { style: { fontFamily: 'Montserrat Bold, Montserrat, sans-serif', }, }, 'New Contract'), ]) } } PendingTx.prototype.gasPriceChanged = function (newBN, valid) { log.info(`Gas price changed to: ${newBN.toString(10)}`) const txMeta = this.gatherTxMeta() txMeta.txParams.gasPrice = '0x' + newBN.toString('hex') this.setState({ txData: clone(txMeta), valid, }) } PendingTx.prototype.gasLimitChanged = function (newBN, valid) { log.info(`Gas limit changed to ${newBN.toString(10)}`) const txMeta = this.gatherTxMeta() txMeta.txParams.gas = '0x' + newBN.toString('hex') this.setState({ txData: clone(txMeta), valid, }) } PendingTx.prototype.resetGasFields = function () { log.debug(`pending-tx resetGasFields`) this.inputs.forEach((hexInput) => { if (hexInput) { hexInput.setValid() } }) this.setState({ txData: null, valid: true, }) } PendingTx.prototype.onSubmit = function (event) { event.preventDefault() const txMeta = this.gatherTxMeta() const valid = this.checkValidity() this.setState({ valid }) if (valid && this.verifyGasParams()) { this.props.sendTransaction(txMeta, event) } else { this.props.dispatch(actions.displayWarning('Invalid Gas Parameters')) } } PendingTx.prototype.checkValidity = function () { const form = this.getFormEl() const valid = form.checkValidity() return valid } PendingTx.prototype.getFormEl = function () { const form = document.querySelector('form#pending-tx-form') // Stub out form for unit tests: if (!form) { return { checkValidity () { return true } } } return form } // After a customizable state value has been updated, PendingTx.prototype.gatherTxMeta = function () { log.debug(`pending-tx gatherTxMeta`) const props = this.props const state = this.state const txData = clone(state.txData) || clone(props.txData) log.debug(`UI has defaulted to tx meta ${JSON.stringify(txData)}`) return txData } PendingTx.prototype.verifyGasParams = function () { // We call this in case the gas has not been modified at all if (!this.state) { return true } return ( this._notZeroOrEmptyString(this.state.gas) && this._notZeroOrEmptyString(this.state.gasPrice) ) } PendingTx.prototype._notZeroOrEmptyString = function (obj) { return obj !== '' && obj !== '0x0' } PendingTx.prototype.bnMultiplyByFraction = function (targetBN, numerator, denominator) { const numBN = new BN(numerator) const denomBN = new BN(denominator) return targetBN.mul(numBN).div(denomBN) } function forwardCarrat () { return ( h('img', { src: 'images/forward-carrat.svg', style: { padding: '5px 6px 0px 10px', height: '37px', }, }) ) }