Merge tag 'v4.5.5'

# Conflicts:
#	app/_locales/ja/messages.json
#	package-lock.json

messages.jsonのローカライズ

4 files changed, 270 insertions, 57 deletions

diff --git a/ui/app/components/pending-tx/confirm-deploy-contract.js b/ui/app/components/pending-tx/confirm-deploy-contract.js
index b75f3a964..aa68a9eb0 100644
--- a/ui/app/components/pending-tx/confirm-deploy-contract.js
+++ b/ui/app/components/pending-tx/confirm-deploy-contract.js
@@ -1,5 +1,5 @@
 const { Component } = require('react')
-const { connect } = require('react-redux')
+const connect = require('react-redux').connect
 const h = require('react-hyperscript')
 const PropTypes = require('prop-types')
 const actions = require('../../actions')
@@ -8,7 +8,6 @@ const ethUtil = require('ethereumjs-util')
 const BN = ethUtil.BN
 const hexToBn = require('../../../../app/scripts/lib/hex-to-bn')
 const { conversionUtil } = require('../../conversion-util')
-const t = require('../../../i18n')
 const SenderToRecipient = require('../sender-to-recipient')
 const NetworkDisplay = require('../network-display')
 
@@ -33,7 +32,7 @@ class ConfirmDeployContract extends Component {
     if (valid && this.verifyGasParams()) {
       this.props.sendTransaction(txMeta, event)
     } else {
-      this.props.displayWarning('invalidGasParams')
+      this.props.displayWarning(this.context.t('invalidGasParams'))
       this.setState({ submitting: false })
     }
   }
@@ -178,7 +177,7 @@ class ConfirmDeployContract extends Component {
 
     return (
       h('section.flex-row.flex-center.confirm-screen-row', [
-        h('span.confirm-screen-label.confirm-screen-section-column', [ t('gasFee') ]),
+        h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('gasFee') ]),
         h('div.confirm-screen-section-column', [
           h('div.confirm-screen-row-info', `${fiatGas} ${currentCurrency.toUpperCase()}`),
 
@@ -217,8 +216,8 @@ class ConfirmDeployContract extends Component {
     return (
       h('section.flex-row.flex-center.confirm-screen-row.confirm-screen-total-box ', [
         h('div.confirm-screen-section-column', [
-          h('span.confirm-screen-label', [ t('total') + ' ' ]),
-          h('div.confirm-screen-total-box__subtitle', [ t('amountPlusGas') ]),
+          h('span.confirm-screen-label', [ this.context.t('total') + ' ' ]),
+          h('div.confirm-screen-total-box__subtitle', [ this.context.t('amountPlusGas') ]),
         ]),
 
         h('div.confirm-screen-section-column', [
@@ -248,11 +247,11 @@ class ConfirmDeployContract extends Component {
           h('.page-container__header-row', [
             h('span.page-container__back-button', {
               onClick: () => backToAccountDetail(selectedAddress),
-            }, t('back')),
+            }, this.context.t('back')),
             window.METAMASK_UI_TYPE === 'notification' && h(NetworkDisplay),
           ]),
-          h('.page-container__title', t('confirmContract')),
-          h('.page-container__subtitle', t('pleaseReviewTransaction')),
+          h('.page-container__title', this.context.t('confirmContract')),
+          h('.page-container__subtitle', this.context.t('pleaseReviewTransaction')),
         ]),
         // Main Send token Card
         h('.page-container__content', [
@@ -275,7 +274,7 @@ class ConfirmDeployContract extends Component {
 
           h('div.confirm-screen-rows', [
             h('section.flex-row.flex-center.confirm-screen-row', [
-              h('span.confirm-screen-label.confirm-screen-section-column', [ t('from') ]),
+              h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('from') ]),
               h('div.confirm-screen-section-column', [
                 h('div.confirm-screen-row-info', fromName),
                 h('div.confirm-screen-row-detail', `...${fromAddress.slice(fromAddress.length - 4)}`),
@@ -283,9 +282,9 @@ class ConfirmDeployContract extends Component {
             ]),
 
             h('section.flex-row.flex-center.confirm-screen-row', [
-              h('span.confirm-screen-label.confirm-screen-section-column', [ t('to') ]),
+              h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('to') ]),
               h('div.confirm-screen-section-column', [
-                h('div.confirm-screen-row-info', t('newContract')),
+                h('div.confirm-screen-row-info', this.context.t('newContract')),
               ]),
             ]),
 
@@ -303,12 +302,12 @@ class ConfirmDeployContract extends Component {
             // Cancel Button
             h('button.btn-cancel.page-container__footer-button.allcaps', {
               onClick: event => this.cancel(event, txMeta),
-            }, t('cancel')),
+            }, this.context.t('cancel')),
 
             // Accept Button
             h('button.btn-confirm.page-container__footer-button.allcaps', {
               onClick: event => this.onSubmit(event),
-            }, t('confirm')),
+            }, this.context.t('confirm')),
           ]),
         ]),
       ])
@@ -325,6 +324,7 @@ ConfirmDeployContract.propTypes = {
   conversionRate: PropTypes.number,
   currentCurrency: PropTypes.string,
   selectedAddress: PropTypes.string,
+  t: PropTypes.func,
 }
 
 const mapStateToProps = state => {
@@ -347,8 +347,12 @@ const mapDispatchToProps = dispatch => {
   return {
     backToAccountDetail: address => dispatch(actions.backToAccountDetail(address)),
     cancelTransaction: ({ id }) => dispatch(actions.cancelTx({ id })),
-    displayWarning: warning => actions.displayWarning(t(warning)),
+    displayWarning: warning => actions.displayWarning(warning),
   }
 }
 
+ConfirmDeployContract.contextTypes = {
+  t: PropTypes.func,
+}
+
 module.exports = connect(mapStateToProps, mapDispatchToProps)(ConfirmDeployContract)
diff --git a/ui/app/components/pending-tx/confirm-send-ether.js b/ui/app/components/pending-tx/confirm-send-ether.js
index d1ce25cbf..7bf20bced 100644
--- a/ui/app/components/pending-tx/confirm-send-ether.js
+++ b/ui/app/components/pending-tx/confirm-send-ether.js
@@ -1,5 +1,6 @@
 const Component = require('react').Component
-const { connect } = require('react-redux')
+const PropTypes = require('prop-types')
+const connect = require('react-redux').connect
 const h = require('react-hyperscript')
 const inherits = require('util').inherits
 const actions = require('../../actions')
@@ -7,20 +8,29 @@ const clone = require('clone')
 const ethUtil = require('ethereumjs-util')
 const BN = ethUtil.BN
 const hexToBn = require('../../../../app/scripts/lib/hex-to-bn')
+const classnames = require('classnames')
 const {
   conversionUtil,
   addCurrencies,
   multiplyCurrencies,
 } = require('../../conversion-util')
+const {
+  getGasTotal,
+  isBalanceSufficient,
+} = require('../send/send-utils')
 const GasFeeDisplay = require('../send/gas-fee-display-v2')
-const t = require('../../../i18n')
 const SenderToRecipient = require('../sender-to-recipient')
 const NetworkDisplay = require('../network-display')
 
 const { MIN_GAS_PRICE_HEX } = require('../send/send-constants')
 
+ConfirmSendEther.contextTypes = {
+  t: PropTypes.func,
+}
+
 module.exports = connect(mapStateToProps, mapDispatchToProps)(ConfirmSendEther)
 
+
 function mapStateToProps (state) {
   const {
     conversionRate,
@@ -30,12 +40,14 @@ function mapStateToProps (state) {
   } = state.metamask
   const accounts = state.metamask.accounts
   const selectedAddress = state.metamask.selectedAddress || Object.keys(accounts)[0]
+  const { balance } = accounts[selectedAddress]
   return {
     conversionRate,
     identities,
     selectedAddress,
     currentCurrency,
     send,
+    balance,
   }
 }
 
@@ -86,6 +98,7 @@ function mapDispatchToProps (dispatch) {
       }))
       dispatch(actions.showModal({ name: 'CUSTOMIZE_GAS' }))
     },
+    updateSendErrors: error => dispatch(actions.updateSendErrors(error)),
   }
 }
 
@@ -96,6 +109,52 @@ function ConfirmSendEther () {
   this.onSubmit = this.onSubmit.bind(this)
 }
 
+ConfirmSendEther.prototype.updateComponentSendErrors = function (prevProps) {
+  const {
+    balance: oldBalance,
+    conversionRate: oldConversionRate,
+  } = prevProps
+  const {
+    updateSendErrors,
+    balance,
+    conversionRate,
+    send: {
+      errors: {
+        simulationFails,
+      },
+    },
+  } = this.props
+  const txMeta = this.gatherTxMeta()
+
+  const shouldUpdateBalanceSendErrors = balance && [
+    balance !== oldBalance,
+    conversionRate !== oldConversionRate,
+  ].some(x => Boolean(x))
+
+  if (shouldUpdateBalanceSendErrors) {
+    const balanceIsSufficient = this.isBalanceSufficient(txMeta)
+    updateSendErrors({
+      insufficientFunds: balanceIsSufficient ? false : this.context.t('insufficientFunds'),
+    })
+  }
+
+  const shouldUpdateSimulationSendError = Boolean(txMeta.simulationFails) !== Boolean(simulationFails)
+
+  if (shouldUpdateSimulationSendError) {
+    updateSendErrors({
+      simulationFails: !txMeta.simulationFails ? false : this.context.t('transactionError'),
+    })
+  }
+}
+
+ConfirmSendEther.prototype.componentWillMount = function () {
+  this.updateComponentSendErrors({})
+}
+
+ConfirmSendEther.prototype.componentDidUpdate = function (prevProps) {
+  this.updateComponentSendErrors(prevProps)
+}
+
 ConfirmSendEther.prototype.getAmount = function () {
   const { conversionRate, currentCurrency } = this.props
   const txMeta = this.gatherTxMeta()
@@ -178,6 +237,7 @@ ConfirmSendEther.prototype.getData = function () {
   const { identities } = this.props
   const txMeta = this.gatherTxMeta()
   const txParams = txMeta.txParams || {}
+  const account = identities ? identities[txParams.from] || {} : {}
   const { FIAT: gasFeeInFIAT, ETH: gasFeeInETH, gasFeeInHex } = this.getGasFee()
   const { FIAT: amountInFIAT, ETH: amountInETH } = this.getAmount()
 
@@ -193,11 +253,11 @@ ConfirmSendEther.prototype.getData = function () {
   return {
     from: {
       address: txParams.from,
-      name: identities[txParams.from].name,
+      name: account.name,
     },
     to: {
       address: txParams.to,
-      name: identities[txParams.to] ? identities[txParams.to].name : t('newRecipient'),
+      name: identities[txParams.to] ? identities[txParams.to].name : this.context.t('newRecipient'),
     },
     memo: txParams.memo || '',
     gasFeeInFIAT,
@@ -218,7 +278,12 @@ ConfirmSendEther.prototype.render = function () {
     conversionRate,
     currentCurrency: convertedCurrency,
     showCustomizeGasModal,
-    send: { gasTotal, gasLimit: sendGasLimit, gasPrice: sendGasPrice },
+    send: {
+      gasTotal,
+      gasLimit: sendGasLimit,
+      gasPrice: sendGasPrice,
+      errors,
+    },
   } = this.props
   const txMeta = this.gatherTxMeta()
   const txParams = txMeta.txParams || {}
@@ -298,7 +363,7 @@ ConfirmSendEther.prototype.render = function () {
 
         h('div.confirm-screen-rows', [
           h('section.flex-row.flex-center.confirm-screen-row', [
-            h('span.confirm-screen-label.confirm-screen-section-column', [ t('from') ]),
+            h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('from') ]),
             h('div.confirm-screen-section-column', [
               h('div.confirm-screen-row-info', fromName),
               h('div.confirm-screen-row-detail', `...${fromAddress.slice(fromAddress.length - 4)}`),
@@ -306,7 +371,7 @@ ConfirmSendEther.prototype.render = function () {
           ]),
 
           h('section.flex-row.flex-center.confirm-screen-row', [
-            h('span.confirm-screen-label.confirm-screen-section-column', [ t('to') ]),
+            h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('to') ]),
             h('div.confirm-screen-section-column', [
               h('div.confirm-screen-row-info', toName),
               h('div.confirm-screen-row-detail', `...${toAddress.slice(toAddress.length - 4)}`),
@@ -314,7 +379,7 @@ ConfirmSendEther.prototype.render = function () {
           ]),
 
           h('section.flex-row.flex-center.confirm-screen-row', [
-            h('span.confirm-screen-label.confirm-screen-section-column', [ t('gasFee') ]),
+            h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('gasFee') ]),
             h('div.confirm-screen-section-column', [
               h(GasFeeDisplay, {
                 gasTotal: gasTotal || gasFeeInHex,
@@ -326,15 +391,22 @@ ConfirmSendEther.prototype.render = function () {
           ]),
 
           h('section.flex-row.flex-center.confirm-screen-row.confirm-screen-total-box ', [
-            h('div.confirm-screen-section-column', [
-              h('span.confirm-screen-label', [ t('total') + ' ' ]),
-              h('div.confirm-screen-total-box__subtitle', [ t('amountPlusGas') ]),
+            h('div', {
+              className: classnames({
+                'confirm-screen-section-column--with-error': errors['insufficientFunds'],
+                'confirm-screen-section-column': !errors['insufficientFunds'],
+              }),
+            }, [
+              h('span.confirm-screen-label', [ this.context.t('total') + ' ' ]),
+              h('div.confirm-screen-total-box__subtitle', [ this.context.t('amountPlusGas') ]),
             ]),
 
             h('div.confirm-screen-section-column', [
               h('div.confirm-screen-row-info', `${totalInFIAT} ${currentCurrency.toUpperCase()}`),
               h('div.confirm-screen-row-detail', `${totalInETH} ETH`),
             ]),
+
+            this.renderErrorMessage('insufficientFunds'),
           ]),
         ]),
 
@@ -420,8 +492,10 @@ ConfirmSendEther.prototype.render = function () {
       ]),
 
       h('form#pending-tx-form', {
+        className: 'confirm-screen-form',
         onSubmit: this.onSubmit,
       }, [
+        this.renderErrorMessage('simulationFails'),
         h('.page-container__footer', [
           // Cancel Button
           h('button.btn-cancel.page-container__footer-button.allcaps', {
@@ -429,26 +503,38 @@ ConfirmSendEther.prototype.render = function () {
               clearSend()
               this.cancel(event, txMeta)
             },
-          }, t('cancel')),
+          }, this.context.t('cancel')),
 
           // Accept Button
-          h('button.btn-confirm.page-container__footer-button.allcaps', [t('confirm')]),
+          h('button.btn-confirm.page-container__footer-button.allcaps', [this.context.t('confirm')]),
         ]),
       ]),
     ])
   )
 }
 
+ConfirmSendEther.prototype.renderErrorMessage = function (message) {
+  const { send: { errors } } = this.props
+
+  return errors[message]
+    ? h('div.confirm-screen-error', [ errors[message] ])
+    : null
+}
+
 ConfirmSendEther.prototype.onSubmit = function (event) {
   event.preventDefault()
+  const { updateSendErrors } = this.props
   const txMeta = this.gatherTxMeta()
   const valid = this.checkValidity()
+  const balanceIsSufficient = this.isBalanceSufficient(txMeta)
   this.setState({ valid, submitting: true })
 
-  if (valid && this.verifyGasParams()) {
+  if (valid && this.verifyGasParams() && balanceIsSufficient) {
     this.props.sendTransaction(txMeta, event)
+  } else if (!balanceIsSufficient) {
+    updateSendErrors({ insufficientFunds: this.context.t('insufficientFunds') })
   } else {
-    this.props.dispatch(actions.displayWarning(t('invalidGasParams')))
+    updateSendErrors({ invalidGasParams: this.context.t('invalidGasParams') })
     this.setState({ submitting: false })
   }
 }
@@ -460,6 +546,28 @@ ConfirmSendEther.prototype.cancel = function (event, txMeta) {
   cancelTransaction(txMeta)
 }
 
+ConfirmSendEther.prototype.isBalanceSufficient = function (txMeta) {
+  const {
+    balance,
+    conversionRate,
+  } = this.props
+  const {
+    txParams: {
+      gas,
+      gasPrice,
+      value: amount,
+    },
+  } = txMeta
+  const gasTotal = getGasTotal(gas, gasPrice)
+
+  return isBalanceSufficient({
+    amount,
+    gasTotal,
+    balance,
+    conversionRate,
+  })
+}
+
 ConfirmSendEther.prototype.checkValidity = function () {
   const form = this.getFormEl()
   const valid = form.checkValidity()
@@ -523,4 +631,4 @@ ConfirmSendEther.prototype.bnMultiplyByFraction = function (targetBN, numerator,
   const numBN = new BN(numerator)
   const denomBN = new BN(denominator)
   return targetBN.mul(numBN).div(denomBN)
-}
+}
\ No newline at end of file
diff --git a/ui/app/components/pending-tx/confirm-send-token.js b/ui/app/components/pending-tx/confirm-send-token.js
index f9276e8a5..19e591fd6 100644
--- a/ui/app/components/pending-tx/confirm-send-token.js
+++ b/ui/app/components/pending-tx/confirm-send-token.js
@@ -1,12 +1,12 @@
 const Component = require('react').Component
-const { connect } = require('react-redux')
+const PropTypes = require('prop-types')
+const connect = require('react-redux').connect
 const h = require('react-hyperscript')
 const inherits = require('util').inherits
 const tokenAbi = require('human-standard-token-abi')
 const abiDecoder = require('abi-decoder')
 abiDecoder.addABI(tokenAbi)
 const actions = require('../../actions')
-const t = require('../../../i18n')
 const clone = require('clone')
 const Identicon = require('../identicon')
 const GasFeeDisplay = require('../send/gas-fee-display-v2.js')
@@ -18,8 +18,13 @@ const {
   addCurrencies,
 } = require('../../conversion-util')
 const {
+  getGasTotal,
+  isBalanceSufficient,
+} = require('../send/send-utils')
+const {
   calcTokenAmount,
 } = require('../../token-util')
+const classnames = require('classnames')
 
 const { MIN_GAS_PRICE_HEX } = require('../send/send-constants')
 
@@ -29,8 +34,13 @@ const {
   getSelectedTokenContract,
 } = require('../../selectors')
 
+ConfirmSendToken.contextTypes = {
+  t: PropTypes.func,
+}
+
 module.exports = connect(mapStateToProps, mapDispatchToProps)(ConfirmSendToken)
 
+
 function mapStateToProps (state, ownProps) {
   const { token: { symbol }, txData } = ownProps
   const { txParams } = txData || {}
@@ -41,9 +51,10 @@ function mapStateToProps (state, ownProps) {
     identities,
     currentCurrency,
   } = state.metamask
+  const accounts = state.metamask.accounts
   const selectedAddress = getSelectedAddress(state)
   const tokenExchangeRate = getTokenExchangeRate(state, symbol)
-
+  const { balance } = accounts[selectedAddress]
   return {
     conversionRate,
     identities,
@@ -53,6 +64,7 @@ function mapStateToProps (state, ownProps) {
     currentCurrency: currentCurrency.toUpperCase(),
     send: state.metamask.send,
     tokenContract: getSelectedTokenContract(state),
+    balance,
   }
 }
 
@@ -102,7 +114,7 @@ function mapDispatchToProps (dispatch, ownProps) {
         fromNumericBase: 'dec',
         toNumericBase: 'hex',
       })
-    
+
       let forceGasMin
       if (lastGasPrice) {
         forceGasMin = ethUtil.addHexPrefix(multiplyCurrencies(lastGasPrice, 1.1, {
@@ -124,6 +136,7 @@ function mapDispatchToProps (dispatch, ownProps) {
       }))
       dispatch(actions.showModal({ name: 'CUSTOMIZE_GAS' }))
     },
+    updateSendErrors: error => dispatch(actions.updateSendErrors(error)),
   }
 }
 
@@ -134,6 +147,44 @@ function ConfirmSendToken () {
   this.onSubmit = this.onSubmit.bind(this)
 }
 
+ConfirmSendToken.prototype.updateComponentSendErrors = function (prevProps) {
+  const {
+    balance: oldBalance,
+    conversionRate: oldConversionRate,
+  } = prevProps
+  const {
+    updateSendErrors,
+    balance,
+    conversionRate,
+    send: {
+      errors: {
+        simulationFails,
+      },
+    },
+  } = this.props
+  const txMeta = this.gatherTxMeta()
+
+  const shouldUpdateBalanceSendErrors = balance && [
+    balance !== oldBalance,
+    conversionRate !== oldConversionRate,
+  ].some(x => Boolean(x))
+
+  if (shouldUpdateBalanceSendErrors) {
+    const balanceIsSufficient = this.isBalanceSufficient(txMeta)
+    updateSendErrors({
+      insufficientFunds: balanceIsSufficient ? false : this.context.t('insufficientFunds'),
+    })
+  }
+
+  const shouldUpdateSimulationSendError = Boolean(txMeta.simulationFails) !== Boolean(simulationFails)
+
+  if (shouldUpdateSimulationSendError) {
+    updateSendErrors({
+      simulationFails: !txMeta.simulationFails ? false : this.context.t('transactionError'),
+    })
+  }
+}
+
 ConfirmSendToken.prototype.componentWillMount = function () {
   const { tokenContract, selectedAddress } = this.props
   tokenContract && tokenContract
@@ -141,6 +192,11 @@ ConfirmSendToken.prototype.componentWillMount = function () {
     .then(usersToken => {
     })
   this.props.updateTokenExchangeRate()
+  this.updateComponentSendErrors({})
+}
+
+ConfirmSendToken.prototype.componentDidUpdate = function (prevProps) {
+  this.updateComponentSendErrors(prevProps)
 }
 
 ConfirmSendToken.prototype.getAmount = function () {
@@ -169,7 +225,7 @@ ConfirmSendToken.prototype.getAmount = function () {
       ? +(sendTokenAmount * tokenExchangeRate * conversionRate).toFixed(2)
       : null,
     token: typeof value === 'undefined'
-      ? t('unknown')
+      ? this.context.t('unknown')
       : +sendTokenAmount.toFixed(decimals),
   }
 
@@ -241,7 +297,7 @@ ConfirmSendToken.prototype.getData = function () {
     },
     to: {
       address: value,
-      name: identities[value] ? identities[value].name : t('newRecipient'),
+      name: identities[value] ? identities[value].name : this.context.t('newRecipient'),
     },
     memo: txParams.memo || '',
   }
@@ -287,7 +343,7 @@ ConfirmSendToken.prototype.renderGasFee = function () {
 
   return (
     h('section.flex-row.flex-center.confirm-screen-row', [
-      h('span.confirm-screen-label.confirm-screen-section-column', [ t('gasFee') ]),
+      h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('gasFee') ]),
       h('div.confirm-screen-section-column', [
         h(GasFeeDisplay, {
           gasTotal: gasTotal || gasFeeInHex,
@@ -301,7 +357,7 @@ ConfirmSendToken.prototype.renderGasFee = function () {
 }
 
 ConfirmSendToken.prototype.renderTotalPlusGas = function () {
-  const { token: { symbol }, currentCurrency } = this.props
+  const { token: { symbol }, currentCurrency, send: { errors } } = this.props
   const { fiat: fiatAmount, token: tokenAmount } = this.getAmount()
   const { fiat: fiatGas, token: tokenGas } = this.getGasFee()
 
@@ -309,8 +365,8 @@ ConfirmSendToken.prototype.renderTotalPlusGas = function () {
     ? (
       h('section.flex-row.flex-center.confirm-screen-row.confirm-screen-total-box ', [
         h('div.confirm-screen-section-column', [
-          h('span.confirm-screen-label', [ t('total') + ' ' ]),
-          h('div.confirm-screen-total-box__subtitle', [ t('amountPlusGas') ]),
+          h('span.confirm-screen-label', [ this.context.t('total') + ' ' ]),
+          h('div.confirm-screen-total-box__subtitle', [ this.context.t('amountPlusGas') ]),
         ]),
 
         h('div.confirm-screen-section-column', [
@@ -321,19 +377,34 @@ ConfirmSendToken.prototype.renderTotalPlusGas = function () {
     )
     : (
       h('section.flex-row.flex-center.confirm-screen-row.confirm-screen-total-box ', [
-        h('div.confirm-screen-section-column', [
-          h('span.confirm-screen-label', [ t('total') + ' ' ]),
-          h('div.confirm-screen-total-box__subtitle', [ t('amountPlusGas') ]),
+        h('div', {
+          className: classnames({
+            'confirm-screen-section-column--with-error': errors['insufficientFunds'],
+            'confirm-screen-section-column': !errors['insufficientFunds'],
+          }),
+        }, [
+          h('span.confirm-screen-label', [ this.context.t('total') + ' ' ]),
+          h('div.confirm-screen-total-box__subtitle', [ this.context.t('amountPlusGas') ]),
         ]),
 
         h('div.confirm-screen-section-column', [
           h('div.confirm-screen-row-info', `${tokenAmount} ${symbol}`),
-          h('div.confirm-screen-row-detail', `+ ${fiatGas} ${currentCurrency} ${t('gas')}`),
+          h('div.confirm-screen-row-detail', `+ ${fiatGas} ${currentCurrency} ${this.context.t('gas')}`),
         ]),
+
+        this.renderErrorMessage('insufficientFunds'),
       ])
     )
 }
 
+ConfirmSendToken.prototype.renderErrorMessage = function (message) {
+  const { send: { errors } } = this.props
+
+  return errors[message]
+    ? h('div.confirm-screen-error', [ errors[message] ])
+    : null
+}
+
 ConfirmSendToken.prototype.render = function () {
   const { editTransaction } = this.props
   const txMeta = this.gatherTxMeta()
@@ -350,10 +421,11 @@ ConfirmSendToken.prototype.render = function () {
 
   this.inputs = []
 
-  const title = txMeta.lastGasPrice ? 'Reprice Transaction' : t('confirm')
-  const subtitle = txMeta.lastGasPrice
-    ? 'Increase your gas fee to attempt to overwrite and speed up your transaction'
-    : t('pleaseReviewTransaction')
+  const isTxReprice = Boolean(txMeta.lastGasPrice)
+  const title = isTxReprice ? this.context.t('reprice_title') : this.context.t('confirm')
+  const subtitle = isTxReprice
+    ? this.context.t('reprice_subtitle')
+    : this.context.t('pleaseReviewTransaction')
 
   return (
     h('div.confirm-screen-container.confirm-send-token', [
@@ -362,7 +434,7 @@ ConfirmSendToken.prototype.render = function () {
         h('div.page-container__header', [
           !txMeta.lastGasPrice && h('button.confirm-screen-back-button', {
             onClick: () => editTransaction(txMeta),
-          }, t('edit')),
+          }, this.context.t('edit')),
           h('div.page-container__title', title),
           h('div.page-container__subtitle', subtitle),
         ]),
@@ -406,7 +478,7 @@ ConfirmSendToken.prototype.render = function () {
 
           h('div.confirm-screen-rows', [
             h('section.flex-row.flex-center.confirm-screen-row', [
-              h('span.confirm-screen-label.confirm-screen-section-column', [ t('from') ]),
+              h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('from') ]),
               h('div.confirm-screen-section-column', [
                 h('div.confirm-screen-row-info', fromName),
                 h('div.confirm-screen-row-detail', `...${fromAddress.slice(fromAddress.length - 4)}`),
@@ -414,7 +486,7 @@ ConfirmSendToken.prototype.render = function () {
             ]),
 
             toAddress && h('section.flex-row.flex-center.confirm-screen-row', [
-              h('span.confirm-screen-label.confirm-screen-section-column', [ t('to') ]),
+              h('span.confirm-screen-label.confirm-screen-section-column', [ this.context.t('to') ]),
               h('div.confirm-screen-section-column', [
                 h('div.confirm-screen-row-info', toName),
                 h('div.confirm-screen-row-detail', `...${toAddress.slice(toAddress.length - 4)}`),
@@ -428,17 +500,20 @@ ConfirmSendToken.prototype.render = function () {
           ]),
 
         ]),
+
         h('form#pending-tx-form', {
+          className: 'confirm-screen-form',
           onSubmit: this.onSubmit,
         }, [
+          this.renderErrorMessage('simulationFails'),
           h('.page-container__footer', [
             // Cancel Button
             h('button.btn-cancel.page-container__footer-button.allcaps', {
               onClick: (event) => this.cancel(event, txMeta),
-            }, t('cancel')),
+            }, this.context.t('cancel')),
 
             // Accept Button
-            h('button.btn-confirm.page-container__footer-button.allcaps', [t('confirm')]),
+            h('button.btn-confirm.page-container__footer-button.allcaps', [this.context.t('confirm')]),
           ]),
         ]),
       ]),
@@ -448,18 +523,44 @@ ConfirmSendToken.prototype.render = function () {
 
 ConfirmSendToken.prototype.onSubmit = function (event) {
   event.preventDefault()
+  const { updateSendErrors } = this.props
   const txMeta = this.gatherTxMeta()
   const valid = this.checkValidity()
+  const balanceIsSufficient = this.isBalanceSufficient(txMeta)
   this.setState({ valid, submitting: true })
 
-  if (valid && this.verifyGasParams()) {
+  if (valid && this.verifyGasParams() && balanceIsSufficient) {
     this.props.sendTransaction(txMeta, event)
+  } else if (!balanceIsSufficient) {
+    updateSendErrors({ insufficientFunds: this.context.t('insufficientFunds') })
   } else {
-    this.props.dispatch(actions.displayWarning(t('invalidGasParams')))
+    updateSendErrors({ invalidGasParams: this.context.t('invalidGasParams') })
     this.setState({ submitting: false })
   }
 }
 
+ConfirmSendToken.prototype.isBalanceSufficient = function (txMeta) {
+  const {
+    balance,
+    conversionRate,
+  } = this.props
+  const {
+    txParams: {
+      gas,
+      gasPrice,
+    },
+  } = txMeta
+  const gasTotal = getGasTotal(gas, gasPrice)
+
+  return isBalanceSufficient({
+    amount: '0',
+    gasTotal,
+    balance,
+    conversionRate,
+  })
+}
+
+
 ConfirmSendToken.prototype.cancel = function (event, txMeta) {
   event.preventDefault()
   const { cancelTransaction } = this.props
diff --git a/ui/app/components/pending-tx/index.js b/ui/app/components/pending-tx/index.js
index 9c0453a3b..acdd99364 100644
--- a/ui/app/components/pending-tx/index.js
+++ b/ui/app/components/pending-tx/index.js
@@ -1,5 +1,5 @@
 const Component = require('react').Component
-const { connect } = require('react-redux')
+const connect = require('react-redux').connect
 const h = require('react-hyperscript')
 const clone = require('clone')
 const abi = require('human-standard-token-abi')