From 59c887301aba5d746d669441ec78ef7ec5de3146 Mon Sep 17 00:00:00 2001
From: Dan <danjm.com@gmail.com>
Date: Wed, 11 Apr 2018 11:51:54 -0230
Subject: [PATCH] second commit

---
 .../amount-max-button.component.js            | 54 +++++++++++
 .../amount-max-button.container.js            | 36 ++++++++
 .../amount-max-button.selectors.js            |  0
 .../amount-max-button.utils.js                | 22 +++++
 .../send-amount-row.component.js              | 91 +++++++++++++++++++
 .../send-amount-row.container.js              | 45 ++++-----
 .../send-amount-row.selectors.js              | 14 +++
 .../send-amount-row/send-amount-row.utils.js  | 55 +++++++++++
 .../send-content/send-content.component.js    | 23 +++++
 .../send-from-row/send-from-row.component.js  |  4 +-
 .../send-from-row/send-from-row.container.js  |  4 +-
 .../send-gas-row/send-gas-row.component.js    | 60 ++++++++++++
 .../send-gas-row/send-gas-row.container.js    | 26 ++++++
 .../send-gas-row/send-gas-row.selectors.js    |  9 ++
 .../send-row-wrapper.component.js             | 11 ++-
 .../send-to-row/send-to-row.component.js      |  8 +-
 .../send-to-row/send-to-row.selectors.js      |  2 +-
 ui/app/components/send_/send.selectors.js     | 49 +++++-----
 18 files changed, 462 insertions(+), 51 deletions(-)
 delete mode 100644 ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.selectors.js

diff --git a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.component.js b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.component.js
index e69de29bb..59a1fd6db 100644
--- a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.component.js
+++ b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.component.js
@@ -0,0 +1,54 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
+export default class AmountMaxButton extends Component {
+
+  static propTypes = {
+    tokenBalance: PropTypes.string,
+    gasTotal: PropTypes.string,
+    balance: PropTypes.string,
+    selectedToken: PropTypes.object,
+    setAmountToMax: PropTypes.func,
+    setMaxModeTo: PropTypes.func,
+    maxModeOn: PropTypes.bool,
+  };
+
+  setAmountToMax = function () {
+    const {
+      balance,
+      tokenBalance,
+      selectedToken,
+      gasTotal,
+      setAmountToMax,
+    } = this.props
+
+    setAmountToMax({
+      tokenBalance,
+      selectedToken,
+      gasTotal,
+      setAmountToMax,
+    })
+  }
+
+  render () {
+    const { setMaxModeTo } = this.props
+
+    return (
+      <div
+        className='send-v2__amount-max'
+        onClick={(event) => {
+          event.preventDefault()
+          setMaxModeTo(true)
+          this.setAmountToMax()
+        }}
+      >
+        {!maxModeOn ? this.context.t('max') : '' ])}
+      </div>
+    );
+  }
+
+}
+
+AmountMaxButton.contextTypes = {
+  t: PropTypes.func,
+}
diff --git a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.container.js b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.container.js
index e69de29bb..572e1fc46 100644
--- a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.container.js
+++ b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.container.js
@@ -0,0 +1,36 @@
+import {
+  getSelectedToken,
+  getGasTotal,
+  getTokenBalance,
+  getSendFromBalance,
+} from '../../../send.selectors.js'
+import { getMaxModeOn } from '../send-amount-row.selectors.js'
+import { calcMaxAmount } from './amount-max-button.utils.js'
+import {
+  updateSendAmount,
+  setMaxModeTo,
+} from '../../../actions'
+import AmountMaxButton from './amount-max-button.component'
+
+export default connect(mapStateToProps, mapDispatchToProps)(SendToRow)
+
+function mapStateToProps (state) {
+
+  return {
+    selectedToken: getSelectedToken(state),
+    maxModeOn: getMaxModeOn(state),
+    gasTotal: getGasTotal(state),
+    tokenBalance: getTokenBalance(state),
+    balance: getSendFromBalance(state),
+  }
+}
+
+function mapDispatchToProps (dispatch) {
+  return {
+    setAmountToMax: maxAmountDataObject => {
+      updateSendErrors({ amount: null })
+      updateSendAmount(calcMaxAmount(maxAmountDataObject))
+    }
+    setMaxModeTo: bool => dispatch(setMaxModeTo(bool)),
+  }
+}
\ No newline at end of file
diff --git a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.selectors.js b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.selectors.js
deleted file mode 100644
index e69de29bb..000000000
diff --git a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.utils.js b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.utils.js
index e69de29bb..54aacc8d7 100644
--- a/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.utils.js
+++ b/ui/app/components/send_/send-content/send-amount-row/amount-max-button/amount-max-button.utils.js
@@ -0,0 +1,22 @@
+const {
+  multiplyCurrencies,
+  subtractCurrencies,
+} = require('../../../../conversion-util')
+const ethUtil = require('ethereumjs-util')
+
+function calcMaxAmount ({ balance, gasTotal, selectedToken, tokenBalance }) {
+    const { decimals } = selectedToken || {}
+    const multiplier = Math.pow(10, Number(decimals || 0))
+
+    return selectedToken
+      ? multiplyCurrencies(tokenBalance, multiplier, {toNumericBase: 'hex'})
+      : subtractCurrencies(
+        ethUtil.addHexPrefix(balance),
+        ethUtil.addHexPrefix(gasTotal),
+        { toNumericBase: 'hex' }
+      )
+}
+
+module.exports = {
+  calcMaxAmount
+}
diff --git a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.component.js b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.component.js
index e69de29bb..78038f714 100644
--- a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.component.js
+++ b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.component.js
@@ -0,0 +1,91 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+import SendRowWrapper from '../send-row-wrapper/send-row-wrapper.component'
+import AmountMaxButton from '../amount-max-button/amount-max-button.component'
+import CurrencyDisplay from '../../../send/currency-display'
+
+export default class SendAmountRow extends Component {
+
+  static propTypes = {
+    amountConversionRate: PropTypes.string,
+    conversionRate: PropTypes.string,
+    from: PropTypes.object,
+    gasTotal: PropTypes.string,
+    primaryCurrency: PropTypes.string,
+    selectedToken: PropTypes.object,
+    tokenBalance: PropTypes.string,
+    updateSendAmountError: PropTypes.func,
+    updateSendAmount: PropTypes.func,
+    setMaxModeTo: PropTypes.func
+  }
+
+  validateAmount (amount) {
+    const {
+      amountConversionRate,
+      conversionRate,
+      from: { balance },
+      gasTotal,
+      primaryCurrency,
+      selectedToken,
+      tokenBalance,
+      updateSendAmountError,
+    } = this.props
+
+    updateSendAmountError({
+      amount,
+      amountConversionRate,
+      balance,
+      conversionRate,
+      gasTotal,
+      primaryCurrency,
+      selectedToken,
+      tokenBalance,
+    })
+  }
+
+  handleAmountChange (amount) {
+    const { updateSendAmount, setMaxModeTo } = this.props
+
+    setMaxModeTo(false)
+    this.validateAmount(amount)
+    updateSendAmount(amount)
+  }
+
+  render () {
+    const {
+      amount,
+      amountConversionRate,
+      convertedCurrency,
+      inError,
+      gasTotal,
+      maxModeOn,
+      primaryCurrency = 'ETH',
+      selectedToken,
+    } = this.props
+
+    return (
+      <SendRowWrapper
+        label={`${this.context.t('amount')}:`}
+        showError={inError}
+        errorType={'amount'}
+      >
+        !inError && gasTotal && <AmountMaxButton />
+        <CurrencyDisplay
+          inError={inError},
+          primaryCurrency={primaryCurrency},
+          convertedCurrency={convertedCurrency},
+          selectedToken={selectedToken},
+          value={amount || '0x0'},
+          conversionRate={amountConversionRate},
+          handleChange={this.handleAmountChange},
+        >
+      </SendRowWrapper>
+    );
+  }
+
+}
+
+SendAmountRow.contextTypes = {
+  t: PropTypes.func,
+}
+
diff --git a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.container.js b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.container.js
index 6ae80e7f2..098855a02 100644
--- a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.container.js
+++ b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.container.js
@@ -7,42 +7,43 @@ import {
   getGasTotal,
   getSelectedBalance,
   getTokenBalance,
+  getSendFromBalance,
 } from '../../send.selectors.js'
 import {
   getMaxModeOn,
-  getSendAmountError,
+  sendAmountIsInError,
 } from './send-amount-row.selectors.js'
-import { getAmountErrorObject } from './send-to-row.utils.js'
+import { getAmountErrorObject } from './send-amount-row.utils.js'
 import {
-  updateSendErrors,
-  updateSendTo,
+  updateSendAmount,
+  setMaxModeTo,
 } from '../../../actions'
-import {
-  openToDropdown,
-  closeToDropdown,
-} from '../../../ducks/send'
-import SendToRow from './send-to-row.component'
+import SendAmountRow from './send-amount-row.component'
 
 export default connect(mapStateToProps, mapDispatchToProps)(SendToRow)
 
 function mapStateToProps (state) {
 updateSendTo
 return {
-  to: getSendTo(state),
-  toAccounts: getSendToAccounts(state),
-  toDropdownOpen: getToDropdownOpen(state),
-  inError: sendToIsInError(state),
-  network: getCurrentNetwork(state),
+  selectedToken: getSelectedToken(state),
+  primaryCurrency: getPrimaryCurrency(state),
+  convertedCurrency: getConvertedCurrency(state),
+  amountConversionRate: getAmountConversionRate(state),
+  inError: sendAmountIsInError(state),
+  amount: getSendAmount(state),
+  maxModeOn: getMaxModeOn(state),
+  gasTotal: getGasTotal(state),
+  tokenBalance: getTokenBalance(state),
+  balance: getSendFromBalance(state),
 }
 }
 
 function mapDispatchToProps (dispatch) {
-return {
-  updateSendToError: (to) => {
-      dispatch(updateSendErrors(getToErrorObject(to)))
-  },
-  updateSendTo: (to, nickname) => dispatch(updateSendTo(to, nickname)),
-  openToDropdown: () => dispatch(()),
-  closeToDropdown: () => dispatch(()),
-}
+  return {
+    updateSendAmountError: (amountDataObject) => {
+        dispatch(updateSendErrors(getAmountErrorObject(amountDataObject)))
+    },
+    updateSendAmount: newAmount => dispatch(updateSendAmount(newAmount)),
+    setMaxModeTo: bool => dispatch(setMaxModeTo(bool)),
+  }
 }
\ No newline at end of file
diff --git a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.selectors.js b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.selectors.js
index e69de29bb..724f345af 100644
--- a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.selectors.js
+++ b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.selectors.js
@@ -0,0 +1,14 @@
+const selectors = {
+  getMaxModeOn,
+  sendAmountIsInError,
+}
+
+module.exports = selectors
+
+function getMaxModeOn (state) {
+  return state.metamask.send.maxModeOn
+}
+
+function sendAmountIsInError (state) {
+    return Boolean(state.metamask.send.errors.amount)
+}
diff --git a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.utils.js b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.utils.js
index e69de29bb..5b01b4594 100644
--- a/ui/app/components/send_/send-content/send-amount-row/send-amount-row.utils.js
+++ b/ui/app/components/send_/send-content/send-amount-row/send-amount-row.utils.js
@@ -0,0 +1,55 @@
+const { isValidAddress } = require('../../../../util')
+
+function getAmountErrorObject ({
+  amount,
+  balance,
+  amountConversionRate,
+  conversionRate,
+  primaryCurrency,
+  selectedToken,
+  gasTotal,
+  tokenBalance,
+}) {
+  let insufficientFunds = false
+  if (gasTotal && conversionRate) {
+    insufficientFunds = !isBalanceSufficient({
+      amount: selectedToken ? '0x0' : amount,
+      gasTotal,
+      balance,
+      primaryCurrency,
+      amountConversionRate,
+      conversionRate,
+    })
+  }
+
+  let inSufficientTokens = false
+  if (selectedToken && tokenBalance !== null) {
+    const { decimals } = selectedToken
+    inSufficientTokens = !isTokenBalanceSufficient({
+      tokenBalance,
+      amount,
+      decimals,
+    })
+  }
+
+  const amountLessThanZero = conversionGreaterThan(
+    { value: 0, fromNumericBase: 'dec' },
+    { value: amount, fromNumericBase: 'hex' },
+  )
+
+  let amountError = null
+
+  if (insufficientFunds) {
+    amountError = this.context.t('insufficientFunds')
+  } else if (insufficientTokens) {
+    amountError = this.context.t('insufficientTokens')
+  } else if (amountLessThanZero) {
+    amountError = this.context.t('negativeETH')
+  }
+
+  return { amount: amountError }
+}
+
+module.exports = {
+  getAmountErrorObject
+}
diff --git a/ui/app/components/send_/send-content/send-content.component.js b/ui/app/components/send_/send-content/send-content.component.js
index e69de29bb..ad6b4a982 100644
--- a/ui/app/components/send_/send-content/send-content.component.js
+++ b/ui/app/components/send_/send-content/send-content.component.js
@@ -0,0 +1,23 @@
+import React, { Component } from 'react'
+import PageContainerContent from '../../page-container/page-container-header.component'
+import SendFromRow from './send-from-row/send-from-row.component'
+import SendToRow from './send-to-row/send-to-row.component'
+import SendAmountRow from './send-amount-row/send-amount-row.component'
+import SendGasRow from './send-gas-row/send-gas-row.component'
+
+export default class SendContent extends Component {
+
+  render () {
+    return (
+      <PageContainerContent>
+        <div className='.send-v2__form'>
+          <SendFromRow />
+          <SendToRow />
+          <SendAmountRow />
+          <SendGasRow />
+        </div>
+      </PageContainerContent>
+    );
+  }
+
+}
diff --git a/ui/app/components/send_/send-content/send-from-row/send-from-row.component.js b/ui/app/components/send_/send-content/send-from-row/send-from-row.component.js
index 7582cb2e6..b17f749a6 100644
--- a/ui/app/components/send_/send-content/send-from-row/send-from-row.component.js
+++ b/ui/app/components/send_/send-content/send-from-row/send-from-row.component.js
@@ -1,7 +1,7 @@
 import React, { Component } from 'react'
 import PropTypes from 'prop-types'
-import SendRowWrapper from '../../../send/from-dropdown'
-import FromDropdown from ''
+import SendRowWrapper from '../send-row-wrapper/send-row-wrapper.component'
+import FromDropdown from '../../../send/from-dropdown'
 
 export default class SendFromRow extends Component {
 
diff --git a/ui/app/components/send_/send-content/send-from-row/send-from-row.container.js b/ui/app/components/send_/send-content/send-from-row/send-from-row.container.js
index 2ff3f0ccd..eeeb51629 100644
--- a/ui/app/components/send_/send-content/send-from-row/send-from-row.container.js
+++ b/ui/app/components/send_/send-content/send-from-row/send-from-row.container.js
@@ -1,6 +1,6 @@
 import {
     getSendFrom,
-    conversionRateSelector,
+    getConversionRate,
     getSelectedTokenContract,
     getCurrentAccountWithSendEtherInfo,
     accountsWithSendEtherInfoSelector,
@@ -23,7 +23,7 @@ function mapStateToProps (state) {
   return {
     from: getSendFrom(state) || getCurrentAccountWithSendEtherInfo(state),
     fromAccounts: accountsWithSendEtherInfoSelector(state),
-    conversionRate: conversionRateSelector(state),
+    conversionRate: getConversionRate(state),
     fromDropdownOpen: getFromDropdownOpen(state),
     tokenContract: getSelectedTokenContract(state),
   }
diff --git a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.component.js b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.component.js
index e69de29bb..8c1f14f48 100644
--- a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.component.js
+++ b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.component.js
@@ -0,0 +1,60 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+import SendRowWrapper from '../send-row-wrapper/send-row-wrapper.component'
+import GasFeeDisplay from '../../../send/gas-fee-display-v2'
+
+export default class SendGasRow extends Component {
+
+  static propTypes = {
+    closeFromDropdown: PropTypes.func,
+    conversionRate: PropTypes.string,
+    from: PropTypes.string,
+    fromAccounts: PropTypes.array,
+    fromDropdownOpen: PropTypes.bool,
+    openFromDropdown: PropTypes.func,
+    tokenContract: PropTypes.object,
+    updateSendFrom: PropTypes.func,
+    updateSendTokenBalance: PropTypes.func,
+  };
+
+  async handleFromChange (newFrom) {
+    const {
+      updateSendFrom,
+      tokenContract,
+      updateSendTokenBalance,
+    } = this.props
+
+    if (tokenContract) {
+      const usersToken = await tokenContract.balanceOf(newFrom.address)
+      updateSendTokenBalance(usersToken)
+    }
+    updateSendFrom(newFrom)
+  }
+
+  render () {
+    const {
+      conversionRate,
+      convertedCurrency,
+      showCustomizeGasModal,
+      gasTotal,
+      gasLoadingError,
+    } = this.props
+
+    return (
+      <SendRowWrapper label={`${this.context.t('gasFee')}:`}>
+        <GasFeeDisplay
+          gasTotal={gasTotal},
+          conversionRate={conversionRate},
+          convertedCurrency={convertedCurrency},
+          onClick={() => showCustomizeGasModal()},
+          gasLoadingError={gasLoadingError},
+        />
+      </SendRowWrapper>
+    );
+  }
+
+}
+
+SendGasRow.contextTypes = {
+  t: PropTypes.func,
+}
diff --git a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.container.js b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.container.js
index e69de29bb..7fb3a68be 100644
--- a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.container.js
+++ b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.container.js
@@ -0,0 +1,26 @@
+import {
+    getConversionRate,
+    getConvertedCurrency,
+    getGasTotal,
+} from '../../send.selectors.js'
+import { getGasLoadingError } from './send-gas-row.selectors.js'
+import { calcTokenUpdateAmount } from './send-gas-row.utils.js'
+import { showModal } from '../../../actions'
+import SendGasRow from './send-from-row.component'
+
+export default connect(mapStateToProps, mapDispatchToProps)(SendGasRow)
+
+function mapStateToProps (state) {
+  return {
+    conversionRate: getConversionRate(state),
+    convertedCurrency: getConvertedCurrency(state),
+    gasTotal: getGasTotal(state),
+    gasLoadingError: getGasLoadingError(state),
+  }
+}
+
+function mapDispatchToProps (dispatch) {
+  return {
+    showCustomizeGasModal: () => dispatch(showModal({ name: 'CUSTOMIZE_GAS' })),
+  }
+}
diff --git a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.selectors.js b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.selectors.js
index e69de29bb..d069ae8c6 100644
--- a/ui/app/components/send_/send-content/send-gas-row/send-gas-row.selectors.js
+++ b/ui/app/components/send_/send-content/send-gas-row/send-gas-row.selectors.js
@@ -0,0 +1,9 @@
+const selectors = {
+  sendGasIsInError,
+}
+
+module.exports = selectors
+
+function sendGasIsInError (state) {
+  return state.send.errors.gasLoading
+}
diff --git a/ui/app/components/send_/send-content/send-row-wrapper/send-row-wrapper.component.js b/ui/app/components/send_/send-content/send-row-wrapper/send-row-wrapper.component.js
index a1ac591b9..92382da01 100644
--- a/ui/app/components/send_/send-content/send-row-wrapper/send-row-wrapper.component.js
+++ b/ui/app/components/send_/send-content/send-row-wrapper/send-row-wrapper.component.js
@@ -19,14 +19,23 @@ export default class SendRowWrapper extends Component {
         children,
     } = this.props
 
+    let formField = children[0]
+    let customLabelContent = null
+
+    if (children.length === 2) {
+      formField = children[1]
+      customLabelContent = children[0]
+    }
+
     return (
       <div className="send-v2__form-row">
         <div className="send-v2__form-label">
             {label}
             (showError && <SendRowErrorMessage errorType={errorType}/>)
+            {customLabelContent}
         </div>
         <div className="send-v2__form-field">
-            {children}
+            {formField}
         </div>
       </div>
     );
diff --git a/ui/app/components/send_/send-content/send-to-row/send-to-row.component.js b/ui/app/components/send_/send-content/send-to-row/send-to-row.component.js
index abcb54efc..5f81402d8 100644
--- a/ui/app/components/send_/send-content/send-to-row/send-to-row.component.js
+++ b/ui/app/components/send_/send-content/send-to-row/send-to-row.component.js
@@ -1,6 +1,6 @@
 import React, { Component } from 'react'
 import PropTypes from 'prop-types'
-import SendRowWrapper from '../../../send/from-dropdown'
+import SendRowWrapper from '../send-row-wrapper/send-row-wrapper.component'
 import ToDropdown from '../../../ens-input'
 
 export default class SendToRow extends Component {
@@ -37,7 +37,11 @@ export default class SendToRow extends Component {
     } = this.props
 
     return (
-      <SendRowWrapper label={`${this.context.t('to')}:`}>
+      <SendRowWrapper
+        label={`${this.context.t('to')}:`}
+        showError={inError}
+        errorType={'to'}
+      >
         <EnsInput
           name={'address'}
           placeholder={this.context.t('recipient Address')}
diff --git a/ui/app/components/send_/send-content/send-to-row/send-to-row.selectors.js b/ui/app/components/send_/send-content/send-to-row/send-to-row.selectors.js
index 05bb65fa3..c741aad84 100644
--- a/ui/app/components/send_/send-content/send-to-row/send-to-row.selectors.js
+++ b/ui/app/components/send_/send-content/send-to-row/send-to-row.selectors.js
@@ -10,5 +10,5 @@ function getToDropdownOpen (state) {
 }
 
 function sendToIsInError (state) {
-    return Boolean(state.metamask.send.to)
+    return Boolean(state.metamask.send.errors.to)
 }
diff --git a/ui/app/components/send_/send.selectors.js b/ui/app/components/send_/send.selectors.js
index 8c088098e..9ef13193c 100644
--- a/ui/app/components/send_/send.selectors.js
+++ b/ui/app/components/send_/send.selectors.js
@@ -5,31 +5,33 @@ import {
 } from './conversion-util'
 
 const selectors = {
+  accountsWithSendEtherInfoSelector,
+  autoAddToBetaUI,
+  getConversionRate,
+  getAddressBook,
+  getConversionRate,
+  getCurrentAccountWithSendEtherInfo,
+  getCurrentCurrency,
+  getCurrentNetwork,
+  getCurrentViewContext,
+  getForceGasMin,
+  getGasLimit,
+  getGasPrice,
+  getSelectedAccount,
   getSelectedAddress,
   getSelectedIdentity,
-  getSelectedAccount,
   getSelectedToken,
-  getSelectedTokenExchangeRate,
-  getTokenExchangeRate,
-  conversionRateSelector,
-  transactionsSelector,
-  accountsWithSendEtherInfoSelector,
-  getCurrentAccountWithSendEtherInfo,
-  getGasPrice,
-  getGasLimit,
-  getForceGasMin,
-  getAddressBook,
-  getSendFrom,
-  getCurrentCurrency,
-  getSendAmount,
-  getSelectedTokenToFiatRate,
   getSelectedTokenContract,
-  autoAddToBetaUI,
-  getSendMaxModeState,
-  getCurrentViewContext,
+  getSelectedTokenExchangeRate,
+  getSelectedTokenToFiatRate,
+  getSendAmount,
   getSendErrors,
+  getSendFrom,
+  getSendFromBalance,
+  getSendMaxModeState,
   getSendTo,
-  getCurrentNetwork,
+  getTokenExchangeRate,
+  transactionsSelector,
 }
 
 module.exports = selectors
@@ -82,7 +84,7 @@ function getTokenExchangeRate (state, tokenSymbol) {
   return tokenExchangeRate
 }
 
-function conversionRateSelector (state) {
+function getConversionRate (state) {
   return state.metamask.conversionRate
 }
 
@@ -142,6 +144,11 @@ function getSendFrom (state) {
   return state.metamask.send.from
 }
 
+function getSendFromBalance (state) {
+  const from = state.metamask.send.from || {}
+  return from.balance
+}
+
 function getSendAmount (state) {
   return state.metamask.send.amount
 }
@@ -156,7 +163,7 @@ function getCurrentCurrency (state) {
 
 function getSelectedTokenToFiatRate (state) {
   const selectedTokenExchangeRate = getSelectedTokenExchangeRate(state)
-  const conversionRate = conversionRateSelector(state)
+  const conversionRate = getConversionRate(state)
 
   const tokenToFiatRate = multiplyCurrencies(
     conversionRate,