metamask-extension/ui/example.js

const injectCss = require('inject-css')
const MetaMaskUi = require('./index.js')
const MetaMaskUiCss = require('./css.js')
const EventEmitter = require('events').EventEmitter

// account management

var identities = {
  '0x1113462427bcc9133bb46e88bcbe39cd7ef0e111': {
    name: 'Walrus',
    img: 'QmW6hcwYzXrNkuHrpvo58YeZvbZxUddv69ATSHY3BHpPdd',
    address: '0x1113462427bcc9133bb46e88bcbe39cd7ef0e111',
    balance: 220,
    txCount: 4,
  },
  '0x222462427bcc9133bb46e88bcbe39cd7ef0e7222': {
    name: 'Tardus',
    img: 'QmQYaRdrf2EhRhJWaHnts8Meu1mZiXrNib5W1P6cYmXWRL',
    address: '0x222462427bcc9133bb46e88bcbe39cd7ef0e7222',
    balance: 10.005,
    txCount: 16,
  },
  '0x333462427bcc9133bb46e88bcbe39cd7ef0e7333': {
    name: 'Gambler',
    img: 'QmW6hcwYzXrNkuHrpvo58YeZvbZxUddv69ATSHY3BHpPdd',
    address: '0x333462427bcc9133bb46e88bcbe39cd7ef0e7333',
    balance: 0.000001,
    txCount: 1,
  },
}

var unapprovedTxs = {}
addUnconfTx({
  from: '0x222462427bcc9133bb46e88bcbe39cd7ef0e7222',
  to: '0x1113462427bcc9133bb46e88bcbe39cd7ef0e111',
  value: '0x123',
})
addUnconfTx({
  from: '0x1113462427bcc9133bb46e88bcbe39cd7ef0e111',
  to: '0x333462427bcc9133bb46e88bcbe39cd7ef0e7333',
  value: '0x0000',
  data: '0x000462427bcc9133bb46e88bcbe39cd7ef0e7000',
})

function addUnconfTx (txParams) {
  var time = (new Date()).getTime()
  var id = createRandomId()
  unapprovedTxs[id] = {
    id: id,
    txParams: txParams,
    time: time,
  }
}

var isUnlocked = false
var selectedAccount = null

function getState () {
  return {
    isUnlocked: isUnlocked,
    identities: isUnlocked ? identities : {},
    unapprovedTxs: isUnlocked ? unapprovedTxs : {},
    selectedAccount: selectedAccount,
  }
}

var accountManager = new EventEmitter()

accountManager.getState = function (cb) {
  cb(null, getState())
}

accountManager.setLocked = function () {
  isUnlocked = false
  this._didUpdate()
}

accountManager.submitPassword = function (password, cb) {
  if (password === 'test') {
    isUnlocked = true
    cb(null, getState())
    this._didUpdate()
  } else {
    cb(new Error('Bad password -- try "test"'))
  }
}

accountManager.setSelectedAccount = function (address, cb) {
  selectedAccount = address
  cb(null, getState())
  this._didUpdate()
}

accountManager.signTransaction = function () {
  alert('signing tx....')
}

accountManager._didUpdate = function () {
  this.emit('update', getState())
}

// start app

var container = document.getElementById('app-content')

var css = MetaMaskUiCss()
injectCss(css)

MetaMaskUi({
  container: container,
  accountManager: accountManager,
})

// util

function createRandomId () {
  // 13 time digits
  var datePart = new Date().getTime() * Math.pow(10, 3)
  // 3 random digits
  var extraPart = Math.floor(Math.random() * Math.pow(10, 3))
  // 16 digits
  return datePart + extraPart
}