[NewUI] SendV2-#8: Send container handles tokens; gas info dynamic from state (#2364)

* Adds memo field to send-v2.

* Vertical align transaction with flexbox.

* Customize Gas UI

* Remove internal state from InputNumber and fix use in gastooltip.

* Move customize-gas-modal to its own folder and minor cleanup

* Create send container, get account info from state, and make currency display more reusable

* Adjusts send-v2 and container for send-token. Dynamically getting suggested gas prices.

22 files changed, 915 insertions, 132 deletions

diff --git a/ui/app/app.js b/ui/app/app.js
index 92fc5e697..08d24d86c 100644
--- a/ui/app/app.js
+++ b/ui/app/app.js
@@ -10,7 +10,7 @@ const NewKeyChainScreen = require('./new-keychain')
 // accounts
 const MainContainer = require('./main-container')
 const SendTransactionScreen = require('./send')
-const SendTransactionScreen2 = require('./send-v2.js')
+const SendTransactionScreen2 = require('./components/send/send-v2-container')
 const SendTokenScreen = require('./components/send-token')
 const ConfirmTxScreen = require('./conf-tx')
 // notice
@@ -356,7 +356,12 @@ App.prototype.renderPrimary = function () {
 
     case 'sendToken':
       log.debug('rendering send token screen')
-      return h(SendTokenScreen, {key: 'sendToken'})
+
+      const SendTokenComponentToRender = checkFeatureToggle('send-v2')
+        ? SendTransactionScreen2
+        : SendTokenScreen
+
+      return h(SendTokenComponentToRender, {key: 'sendToken'})
 
     case 'newKeychain':
       log.debug('rendering new keychain screen')
diff --git a/ui/app/components/customize-gas-modal/gas-modal-card.js b/ui/app/components/customize-gas-modal/gas-modal-card.js
new file mode 100644
index 000000000..8e739ee40
--- /dev/null
+++ b/ui/app/components/customize-gas-modal/gas-modal-card.js
@@ -0,0 +1,55 @@
+const Component = require('react').Component
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const InputNumber = require('../input-number.js')
+const GasSlider = require('./gas-slider.js')
+
+module.exports = GasModalCard
+
+inherits(GasModalCard, Component)
+function GasModalCard () {
+  Component.call(this)
+}
+
+GasModalCard.prototype.render = function () {
+  const {
+    memo,
+    identities,
+    onChange,
+    unitLabel,
+    value,
+    min,
+    max,
+    step,
+    title,
+    copy
+  } = this.props
+
+  return h('div.send-v2__gas-modal-card', [
+
+    h('div.send-v2__gas-modal-card__title', {}, title),
+
+    h('div.send-v2__gas-modal-card__copy', {}, copy),
+
+    h(InputNumber, {
+      unitLabel,
+      step,
+      max,
+      min,
+      placeholder: '0',
+      value,
+      onChange,
+    }),
+
+    h(GasSlider, {
+      value,
+      step,
+      max,
+      min,
+      onChange,
+    }),
+    
+  ])
+    
+}
+
diff --git a/ui/app/components/customize-gas-modal/gas-slider.js b/ui/app/components/customize-gas-modal/gas-slider.js
new file mode 100644
index 000000000..e76e96545
--- /dev/null
+++ b/ui/app/components/customize-gas-modal/gas-slider.js
@@ -0,0 +1,50 @@
+const Component = require('react').Component
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+
+module.exports = GasSlider
+
+inherits(GasSlider, Component)
+function GasSlider () {
+  Component.call(this)
+}
+
+GasSlider.prototype.render = function () {
+  const {
+    memo,
+    identities,
+    onChange,
+    unitLabel,
+    value,
+    id,
+    step,
+    max,
+    min,
+  } = this.props
+
+  return h('div.gas-slider', [
+
+    h('input.gas-slider__input', {
+      type: 'range',
+      step,
+      max,
+      min,
+      value,
+      id: 'gasSlider',
+      onChange: event => onChange(event.target.value),
+    }, []),
+
+    h('div.gas-slider__bar', [
+
+      h('div.gas-slider__low'),
+
+      h('div.gas-slider__mid'),
+
+      h('div.gas-slider__high'),
+
+    ]),
+    
+  ])
+    
+}
+
diff --git a/ui/app/components/customize-gas-modal/index.js b/ui/app/components/customize-gas-modal/index.js
new file mode 100644
index 000000000..91e2626b4
--- /dev/null
+++ b/ui/app/components/customize-gas-modal/index.js
@@ -0,0 +1,91 @@
+const Component = require('react').Component
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const connect = require('react-redux').connect
+const actions = require('../../actions')
+const GasModalCard = require('./gas-modal-card')
+
+function mapStateToProps (state) {
+  return {}
+}
+
+function mapDispatchToProps (dispatch) {
+  return {
+    hideModal: () => dispatch(actions.hideModal()),
+  }
+}
+
+inherits(CustomizeGasModal, Component)
+function CustomizeGasModal () {
+  Component.call(this)
+
+  this.state = {
+    gasPrice: '0.23',
+    gasLimit: '25000',
+  }
+}
+
+module.exports = connect(mapStateToProps, mapDispatchToProps)(CustomizeGasModal)
+
+CustomizeGasModal.prototype.render = function () {
+  const { hideModal } = this.props
+  const { gasPrice, gasLimit } = this.state
+
+  return h('div.send-v2__customize-gas', {}, [
+    h('div', {
+    }, [
+      h('div.send-v2__customize-gas__header', {}, [
+
+        h('div.send-v2__customize-gas__title', 'Customize Gas'),
+
+        h('div.send-v2__customize-gas__close', {
+          onClick: hideModal,
+        }),
+
+      ]),
+
+      h('div.send-v2__customize-gas__body', {}, [
+        
+        h(GasModalCard, {
+          value: gasPrice,
+          min: 0.0,
+          max: 5.0,
+          step: 0.01,
+          onChange: gasPrice => this.setState({ gasPrice }),
+          title: 'Gas Price',
+          copy: 'We calculate the suggested gas prices based on network success rates.',
+        }),
+
+        h(GasModalCard, {
+          value: gasLimit,
+          min: 20000,
+          max: 100000,
+          step: 1,
+          onChange: gasLimit => this.setState({ gasLimit }),
+          title: 'Gas Limit',
+          copy: 'We calculate the suggested gas limit based on network success rates.',
+        }),
+
+      ]),
+
+      h('div.send-v2__customize-gas__footer', {}, [
+        
+        h('div.send-v2__customize-gas__revert', {
+          onClick: () => console.log('Revert'),
+        }, ['Revert']),
+
+        h('div.send-v2__customize-gas__buttons', [
+          h('div.send-v2__customize-gas__cancel', {
+            onClick: this.props.hideModal,
+          }, ['CANCEL']),
+
+          h('div.send-v2__customize-gas__save', {
+            onClick: () => console.log('Save'),
+          }, ['SAVE']),
+        ])
+
+      ]),
+
+    ]),
+  ])
+}
diff --git a/ui/app/components/input-number.js b/ui/app/components/input-number.js
index 2824d77aa..16347fd5e 100644
--- a/ui/app/components/input-number.js
+++ b/ui/app/components/input-number.js
@@ -1,6 +1,7 @@
 const Component = require('react').Component
 const h = require('react-hyperscript')
 const inherits = require('util').inherits
+const { addCurrencies } = require('../conversion-util')
 
 module.exports = InputNumber
 
@@ -8,49 +9,37 @@ inherits(InputNumber, Component)
 function InputNumber () {
   Component.call(this)
 
-  this.state = {
-    value: 0,
-  }
-
   this.setValue = this.setValue.bind(this)
 }
 
-InputNumber.prototype.componentWillMount = function () {
-  const { initValue = 0 } = this.props
-
-  this.setState({ value: initValue })
-}
-
 InputNumber.prototype.setValue = function (newValue) {
-  const { fixed, min = -1, onChange } = this.props
+  const { fixed, min = -1, max = Infinity, onChange } = this.props
 
-  if (fixed) newValue = Number(newValue.toFixed(4))
+  newValue = Number(fixed ? newValue.toFixed(4) : newValue)
 
-  if (newValue >= min) {
-    this.setState({ value: newValue })
+  if (newValue >= min && newValue <= max) {
     onChange(newValue)
   }
 }
 
 InputNumber.prototype.render = function () {
-  const { unitLabel, step = 1, placeholder } = this.props
-  const { value } = this.state
+  const { unitLabel, step = 1, placeholder, value = 0 } = this.props
 
   return h('div.customize-gas-input-wrapper', {}, [
     h('input.customize-gas-input', {
       placeholder,
       type: 'number',
-      value,
-      onChange: (e) => this.setValue(Number(e.target.value)),
+      value: value,
+      onChange: (e) => this.setValue(e.target.value),
     }),
     h('span.gas-tooltip-input-detail', {}, [unitLabel]),
     h('div.gas-tooltip-input-arrows', {}, [
       h('i.fa.fa-angle-up', {
-        onClick: () => this.setValue(value + step),
+        onClick: () => this.setValue(addCurrencies(value, step)),
       }),
       h('i.fa.fa-angle-down', {
         style: { cursor: 'pointer' },
-        onClick: () => this.setValue(value - step),
+        onClick: () => this.setValue(addCurrencies(value, step * -1)),
       }),
     ]),
   ])
diff --git a/ui/app/components/modals/modal.js b/ui/app/components/modals/modal.js
index 7247d840e..88deb2bb0 100644
--- a/ui/app/components/modals/modal.js
+++ b/ui/app/components/modals/modal.js
@@ -15,6 +15,7 @@ const ExportPrivateKeyModal = require('./export-private-key-modal')
 const NewAccountModal = require('./new-account-modal')
 const ShapeshiftDepositTxModal = require('./shapeshift-deposit-tx-modal.js')
 const HideTokenConfirmationModal = require('./hide-token-confirmation-modal')
+const CustomizeGasModal = require('../customize-gas-modal')
 
 const accountModalStyle = {
   mobileModalStyle: {
@@ -156,6 +157,31 @@ const MODALS = {
     },
   },
 
+  CUSTOMIZE_GAS: {
+    contents: [
+      h(CustomizeGasModal, {}, []),
+    ],
+    mobileModalStyle: {
+      width: '355px',
+      height: '598px',
+      // top: isPopupOrNotification() === 'popup' ? '52vh' : '36.5vh',
+      top: '5%',
+      transform: 'none',
+      left: '0',
+      right: '0',
+      margin: '0 auto',
+    },
+    laptopModalStyle: {
+      width: '720px',
+      height: '377px',
+      top: '80px',
+      transform: 'none',
+      left: '0',
+      right: '0',
+      margin: '0 auto',
+    },
+  },
+
   DEFAULT: {
     contents: [],
     mobileModalStyle: {},
diff --git a/ui/app/components/send/account-list-item.js b/ui/app/components/send/account-list-item.js
index b11527d95..64acde767 100644
--- a/ui/app/components/send/account-list-item.js
+++ b/ui/app/components/send/account-list-item.js
@@ -3,27 +3,34 @@ const h = require('react-hyperscript')
 const inherits = require('util').inherits
 const connect = require('react-redux').connect
 const Identicon = require('../identicon')
+const CurrencyDisplay = require('./currency-display')
+const { conversionRateSelector } = require('../../selectors')
 
 inherits(AccountListItem, Component)
 function AccountListItem () {
   Component.call(this)
 }
 
-module.exports = AccountListItem
+function mapStateToProps(state) {
+  return {
+    conversionRate: conversionRateSelector(state)
+  }
+}
+
+module.exports = connect(mapStateToProps)(AccountListItem)
 
 AccountListItem.prototype.render = function () {
   const {
     account, 
     handleClick, 
     icon = null,
+    conversionRate,
   } = this.props
 
-  const { identity, balancesToRender } = account
-  const { name, address } = identity
-  const { primary, secondary } = balancesToRender
+  const { name, address, balance } = account
 
   return h('div.account-list-item', {
-    onClick: () => handleClick(identity),
+    onClick: () => handleClick({ name, address, balance }),
   }, [
 
     h('div.account-list-item__top-row', {}, [
@@ -35,7 +42,7 @@ AccountListItem.prototype.render = function () {
           diameter: 18,
           className: 'account-list-item__identicon',
         },
-      ),  
+      ),
 
       h('div.account-list-item__account-name', {}, name),
 
@@ -43,9 +50,17 @@ AccountListItem.prototype.render = function () {
 
     ]),
 
-    h('div.account-list-item__account-primary-balance', {}, primary),
-
-    h('div.account-list-item__account-secondary-balance', {}, secondary),
+    h(CurrencyDisplay, {
+      primaryCurrency: 'ETH',
+      convertedCurrency: 'USD',
+      value: balance,
+      conversionRate,
+      convertedPrefix: '$',
+      readOnly: true,
+      className: 'account-list-item__account-balances',
+      primaryBalanceClassName: 'account-list-item__account-primary-balance',
+      convertedBalanceClassName: 'account-list-item__account-secondary-balance',
+    }, name),
 
   ])
 }
\ No newline at end of file
diff --git a/ui/app/components/send/currency-display.js b/ui/app/components/send/currency-display.js
index 332d722ec..ed9847fdb 100644
--- a/ui/app/components/send/currency-display.js
+++ b/ui/app/components/send/currency-display.js
@@ -11,8 +11,7 @@ function CurrencyDisplay () {
   Component.call(this)
 
   this.state = {
-    minWidth: null,
-    currentScrollWidth: null,
+    value: null,
   }
 }
 
@@ -29,28 +28,50 @@ function resetCaretIfPastEnd (value, event) {
   }
 }
 
+CurrencyDisplay.prototype.handleChangeInHexWei = function (value) {
+  const { handleChange } = this.props
+
+  const valueInHexWei = conversionUtil(value, {
+    fromNumericBase: 'dec',
+    toNumericBase: 'hex',
+    toDenomination: 'WEI',
+  })
+
+  handleChange(valueInHexWei)
+}
+
 CurrencyDisplay.prototype.render = function () {
   const {
-    className,
+    className = 'currency-display',
+    primaryBalanceClassName = 'currency-display__input',
+    convertedBalanceClassName = 'currency-display__converted-value',
+    conversionRate,
     primaryCurrency,
     convertedCurrency,
-    value = '',
-    placeholder = '0',
-    conversionRate,
     convertedPrefix = '',
+    placeholder = '0',
     readOnly = false,
-    handleChange,
+    value: initValue,
   } = this.props
-  const { minWidth } = this.state
+  const { value } = this.state
+
+  const initValueToRender = conversionUtil(initValue, {
+    fromNumericBase: 'hex',
+    toNumericBase: 'dec',
+    fromDenomination: 'WEI',
+    numberOfDecimals: 6,
+    conversionRate,
+  })
 
-  const convertedValue = conversionUtil(value, {
+  const convertedValue = conversionUtil(value || initValueToRender, {
     fromNumericBase: 'dec',
     fromCurrency: primaryCurrency,
     toCurrency: convertedCurrency,
+    numberOfDecimals: 2,
     conversionRate,
   })
 
-  return h('div.currency-display', {
+  return h('div', {
     className,
   }, [
 
@@ -58,35 +79,39 @@ CurrencyDisplay.prototype.render = function () {
 
       h('div.currency-display__input-wrapper', [
 
-        h('input.currency-display__input', {
-          value: `${value} ${primaryCurrency}`,
+        h('input', {
+          className: primaryBalanceClassName,
+          value: `${value || initValueToRender} ${primaryCurrency}`,
           placeholder: `${0} ${primaryCurrency}`,
           readOnly,
           onChange: (event) => {
             let newValue = event.target.value.split(' ')[0]
 
             if (newValue === '') {
-              handleChange('0')
+              this.setState({ value: '0' })
             }
             else if (newValue.match(/^0[1-9]$/)) {
-              handleChange(newValue.match(/[1-9]/)[0])
+              this.setState({ value: newValue.match(/[1-9]/)[0] })
             }
             else if (newValue && !isValidInput(newValue)) {
               event.preventDefault()
             }
             else {
-              handleChange(newValue)
+              this.setState({ value: newValue })
             }
           },
-          onKeyUp: event => resetCaretIfPastEnd(value, event),
-          onClick: event => resetCaretIfPastEnd(value, event),
+          onBlur: event => this.handleChangeInHexWei(event.target.value.split(' ')[0]),
+          onKeyUp: event => resetCaretIfPastEnd(value || initValueToRender, event),
+          onClick: event => resetCaretIfPastEnd(value || initValueToRender, event),
         }),
 
       ]),
 
     ]),
 
-    h('div.currency-display__converted-value', {}, `${convertedPrefix}${convertedValue} ${convertedCurrency}`),
+    h('div', {
+      className: convertedBalanceClassName,
+    }, `${convertedPrefix}${convertedValue} ${convertedCurrency}`),
 
   ])
     
diff --git a/ui/app/components/send/from-dropdown.js b/ui/app/components/send/from-dropdown.js
index fb0a00cc2..e8e1d43f0 100644
--- a/ui/app/components/send/from-dropdown.js
+++ b/ui/app/components/send/from-dropdown.js
@@ -14,7 +14,7 @@ function FromDropdown () {
 FromDropdown.prototype.getListItemIcon = function (currentAccount, selectedAccount) {
   const listItemIcon = h(`i.fa.fa-check.fa-lg`, { style: { color: '#02c9b1' } })
 
-  return currentAccount.identity.address === selectedAccount.identity.address
+  return currentAccount.address === selectedAccount.address
     ? listItemIcon
     : null
 }
diff --git a/ui/app/components/send/gas-fee-display-v2.js b/ui/app/components/send/gas-fee-display-v2.js
new file mode 100644
index 000000000..226ae93f8
--- /dev/null
+++ b/ui/app/components/send/gas-fee-display-v2.js
@@ -0,0 +1,47 @@
+const Component = require('react').Component
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const CurrencyDisplay = require('./currency-display');
+
+const { multiplyCurrencies } = require('../../conversion-util')
+
+module.exports = GasFeeDisplay
+
+inherits(GasFeeDisplay, Component)
+function GasFeeDisplay () {
+  Component.call(this)
+}
+
+GasFeeDisplay.prototype.render = function () {
+  const {
+    conversionRate,
+    gasLimit,
+    gasPrice,
+    onClick,
+  } = this.props
+
+  const readyToRender = Boolean(gasLimit && gasPrice)
+
+  return h('div', [
+
+    readyToRender
+      ? h(CurrencyDisplay, {
+        primaryCurrency: 'ETH',
+        convertedCurrency: 'USD',
+        value: multiplyCurrencies(gasLimit, gasPrice, { toNumericBase: 'hex' }),
+        conversionRate,
+        convertedPrefix: '$',
+        readOnly: true,
+      })
+      : h('div.currency-display', 'Loading...')
+    ,
+
+    h('div.send-v2__sliders-icon-container', {
+      onClick,
+    }, [
+      h('i.fa.fa-sliders.send-v2__sliders-icon'),
+    ])
+
+  ])
+}
+
diff --git a/ui/app/components/send/gas-tooltip.js b/ui/app/components/send/gas-tooltip.js
index bef419e48..46aff3499 100644
--- a/ui/app/components/send/gas-tooltip.js
+++ b/ui/app/components/send/gas-tooltip.js
@@ -73,7 +73,7 @@ GasTooltip.prototype.render = function () {
           step: 1,
           min: 0,
           placeholder: '0',
-          initValue: gasPrice,
+          value: gasPrice,
           onChange: (newPrice) => this.updateGasPrice(newPrice),
         }),
         h('div.gas-tooltip-input-label', {
@@ -89,7 +89,7 @@ GasTooltip.prototype.render = function () {
           step: 1,
           min: 0,
           placeholder: '0',
-          initValue: gasLimit,
+          value: gasLimit,
           onChange: (newLimit) => this.updateGasLimit(newLimit),
         }),
       ]),
diff --git a/ui/app/components/send/memo-textarea.js b/ui/app/components/send/memo-textarea.js
new file mode 100644
index 000000000..4005b9493
--- /dev/null
+++ b/ui/app/components/send/memo-textarea.js
@@ -0,0 +1,33 @@
+const Component = require('react').Component
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const Identicon = require('../identicon')
+
+module.exports = MemoTextArea
+
+inherits(MemoTextArea, Component)
+function MemoTextArea () {
+  Component.call(this)
+}
+
+MemoTextArea.prototype.render = function () {
+  const { memo, identities, onChange } = this.props
+
+  return h('div.send-v2__memo-text-area', [
+
+    h('textarea.send-v2__memo-text-area__input', {
+      placeholder: 'Optional',
+      value: memo,
+      onChange,
+      // onBlur: () => {
+      //   this.setErrorsFor('memo')
+      // },
+      onFocus: event => {
+        // this.clearErrorsFor('memo')
+      },
+    }),
+
+  ])
+    
+}
+
diff --git a/ui/app/components/send/send-v2-container.js b/ui/app/components/send/send-v2-container.js
new file mode 100644
index 000000000..0c8dd5335
--- /dev/null
+++ b/ui/app/components/send/send-v2-container.js
@@ -0,0 +1,62 @@
+const connect = require('react-redux').connect
+const actions = require('../../actions')
+const abi = require('ethereumjs-abi')
+const SendEther = require('../../send-v2')
+
+const { multiplyCurrencies } = require('../../conversion-util')
+
+const {
+  accountsWithSendEtherInfoSelector,
+  getCurrentAccountWithSendEtherInfo,
+  conversionRateSelector,
+  getSelectedToken,
+  getSelectedTokenExchangeRate,
+  getSelectedAddress,
+} = require('../../selectors')
+
+module.exports = connect(mapStateToProps, mapDispatchToProps)(SendEther)
+
+function mapStateToProps (state) {
+  const selectedAddress = getSelectedAddress(state);
+  const selectedToken = getSelectedToken(state);
+  const tokenExchangeRates = state.metamask.tokenExchangeRates
+  const selectedTokenExchangeRate = getSelectedTokenExchangeRate(state)
+  const conversionRate = conversionRateSelector(state)
+
+  let data;
+  let primaryCurrency;
+  let tokenToUSDRate;
+  if (selectedToken) {
+    data = Array.prototype.map.call(
+      abi.rawEncode(['address', 'uint256'], [selectedAddress, '0x0']),
+      x => ('00' + x.toString(16)).slice(-2)
+    ).join('')
+
+    primaryCurrency = selectedToken.symbol
+
+    tokenToUSDRate = multiplyCurrencies(
+      conversionRate,
+      selectedTokenExchangeRate,
+      { toNumericBase: 'dec' }
+    )
+  }
+
+  return {
+    selectedAccount: getCurrentAccountWithSendEtherInfo(state),
+    accounts: accountsWithSendEtherInfoSelector(state),
+    conversionRate,
+    selectedToken,
+    primaryCurrency,
+    data,
+    tokenToUSDRate,
+  }
+}
+
+function mapDispatchToProps (dispatch) {
+  return {
+    showCustomizeGasModal: () => dispatch(actions.showModal({ name: 'CUSTOMIZE_GAS' })),
+    estimateGas: params => dispatch(actions.estimateGas(params)),
+    getGasPrice: () => dispatch(actions.getGasPrice()),
+    updateTokenExchangeRate: token => dispatch(actions.updateTokenExchangeRate(token)),
+  }
+}
diff --git a/ui/app/components/send/to-autocomplete.js b/ui/app/components/send/to-autocomplete.js
index 3808bf496..1bf1e1907 100644
--- a/ui/app/components/send/to-autocomplete.js
+++ b/ui/app/components/send/to-autocomplete.js
@@ -11,7 +11,7 @@ function ToAutoComplete () {
 }
 
 ToAutoComplete.prototype.render = function () {
-  const { to, identities, onChange } = this.props
+  const { to, accounts, onChange } = this.props
 
   return h('div.send-v2__to-autocomplete', [
 
@@ -32,7 +32,7 @@ ToAutoComplete.prototype.render = function () {
 
     h('datalist#addresses', [
       // Corresponds to the addresses owned.
-      ...Object.entries(identities).map(([key, { address, name }]) => {
+      ...Object.entries(accounts).map(([key, { address, name }]) => {
         return h('option', {
           value: address,
           label: name,
diff --git a/ui/app/conversion-util.js b/ui/app/conversion-util.js
index 70c3c2622..3a702bcdd 100644
--- a/ui/app/conversion-util.js
+++ b/ui/app/conversion-util.js
@@ -128,7 +128,8 @@ const conversionUtil = (value, {
   value: value || '0',
 });
 
-const addCurrencies = (a, b, { toNumericBase, numberOfDecimals }) => {
+const addCurrencies = (a, b, options = {}) => {
+  const { toNumericBase, numberOfDecimals } = options
   const value = (new BigNumber(a)).add(b);
   return converter({
     value,
@@ -137,6 +138,16 @@ const addCurrencies = (a, b, { toNumericBase, numberOfDecimals }) => {
   })
 }
 
+const multiplyCurrencies = (a, b, options = {}) => {
+  const { toNumericBase, numberOfDecimals } = options
+  const value = (new BigNumber(a)).times(b);
+  return converter({
+    value,
+    toNumericBase,
+    numberOfDecimals,
+  })
+}
+
 const conversionGreaterThan = (
   { value, fromNumericBase },
   { value: compareToValue, fromNumericBase: compareToBase },
@@ -152,5 +163,6 @@ const conversionGreaterThan = (
 module.exports = {
   conversionUtil,
   addCurrencies,
+  multiplyCurrencies,
   conversionGreaterThan,
 }
\ No newline at end of file
diff --git a/ui/app/css/itcss/components/account-dropdown.scss b/ui/app/css/itcss/components/account-dropdown.scss
index 9966c7f3f..4fc7c705a 100644
--- a/ui/app/css/itcss/components/account-dropdown.scss
+++ b/ui/app/css/itcss/components/account-dropdown.scss
@@ -23,6 +23,16 @@
     margin-left: 8px;
     position: relative;
   }
+
+  &__account-balances {
+    height: auto;
+    border: none;
+    background-color: transparent;
+    color: #9b9b9b;
+    margin-left: 34px;
+    margin-top: 4px;
+    position: relative;
+  }
   
   &__account-name {
     font-size: 16px;
@@ -34,13 +44,22 @@
     right: 12px;
     top: 1px;
   }
+
+  &__account-primary-balance,
+  &__account-secondary-balance {
+    font-family: Roboto;
+    line-height: 16px;
+    font-size: 12px;
+    font-weight: 300;
+  }
+
   &__account-primary-balance {
-    margin-left: 34px;
-    margin-top: 4px;
+    color: $scorpion;
+    border: none;
+    outline: 0 !important;
   }
 
   &__account-secondary-balance {
-    margin-left: 34px;
     color: $dusty-gray;
   }
 }
diff --git a/ui/app/css/itcss/components/currency-display.scss b/ui/app/css/itcss/components/currency-display.scss
index b2776bb47..f2cc6e700 100644
--- a/ui/app/css/itcss/components/currency-display.scss
+++ b/ui/app/css/itcss/components/currency-display.scss
@@ -15,10 +15,6 @@
     display: flex;
   }
 
-  &__input-wrapper {
-    margin-top: -1px;
-  }
-
   &__input {
     color: $scorpion;
     font-family: Roboto;
diff --git a/ui/app/css/itcss/components/gas-slider.scss b/ui/app/css/itcss/components/gas-slider.scss
new file mode 100644
index 000000000..c27a560bd
--- /dev/null
+++ b/ui/app/css/itcss/components/gas-slider.scss
@@ -0,0 +1,51 @@
+.gas-slider {
+  position: relative;
+  width: 313px;
+
+  &__input {
+    width: 317px;
+    margin-left: -2px;
+    z-index: 2;
+  }
+
+  input[type=range] {
+    -webkit-appearance: none !important;
+  }
+
+  input[type=range]::-webkit-slider-thumb {
+    -webkit-appearance: none !important;
+    height: 26px;
+    width: 26px;
+    border: 2px solid #B8B8B8;
+    background-color: #FFFFFF;
+    box-shadow: 0 2px 4px 0 rgba(0,0,0,0.08);
+    border-radius: 50%;
+    position: relative;
+    z-index: 10;
+  }
+
+  &__bar {
+    height: 6px;
+    width: 313px;
+    background: $alto;
+    display: flex;
+    justify-content: space-between;
+    position: absolute;
+    top: 11px;
+    z-index: 0;
+  }
+
+  &__low, &__high {
+    height: 6px;
+    width: 49px;
+    z-index: 1;
+  }
+
+  &__low {
+    background-color: $crimson;
+  }
+
+  &__high {
+    background-color: $caribbean-green;
+  }
+}
\ No newline at end of file
diff --git a/ui/app/css/itcss/components/index.scss b/ui/app/css/itcss/components/index.scss
index dee0959b7..fda002785 100644
--- a/ui/app/css/itcss/components/index.scss
+++ b/ui/app/css/itcss/components/index.scss
@@ -35,3 +35,6 @@
 @import './account-menu.scss';
 
 @import './menu.scss';
+
+@import './gas-slider.scss';
+
diff --git a/ui/app/css/itcss/components/send.scss b/ui/app/css/itcss/components/send.scss
index 80aacf1ab..ddabdee2e 100644
--- a/ui/app/css/itcss/components/send.scss
+++ b/ui/app/css/itcss/components/send.scss
@@ -264,7 +264,7 @@
 .gas-tooltip-input-arrows {
   position: absolute;
   top: 0;
-  left: 178px;
+  right: 4px;
   width: 17px;
   height: 28px;
   border: 1px solid #dadada;
@@ -420,7 +420,16 @@
     }
   }
 
-  &__send-eth-icon {
+  &__send-header-icon-container {
+    z-index: 25;
+
+    @media screen and (max-width: $break-small) {
+      position: relative;
+      top: 0;
+    }
+  }
+
+  &__send-header-icon {
     border-radius: 50%;
     width: 48px;
     height: 48px;
@@ -428,11 +437,6 @@
     z-index: 25;
     padding: 4px;
     background-color: $white;
-
-    @media screen and (max-width: $break-small) {
-      position: relative;
-      top: 0;
-    }
   }
 
   &__send-arrow-icon {
@@ -472,7 +476,7 @@
     position: absolute;
     transform: rotate(45deg);
     left: 178px;
-    top: 71px;
+    top: 65px;
   }
 
   &__title {
@@ -512,7 +516,9 @@
     font-family: Roboto;
     font-size: 16px;
     line-height: 22px;
-    margin-top: 16px;
+    display: flex;
+    flex-flow: column;
+    justify-content: center;
   }
 
   &__from-dropdown {
@@ -550,7 +556,7 @@
     }
   }
 
-  &__to-autocomplete {
+  &__to-autocomplete, &__memo-text-area {
     &__input {
       height: 54px;
       width: 240px;
@@ -566,6 +572,32 @@
     }
   }
 
+  &__sliders-icon-container {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 24px;
+    width: 24px;
+    border: 1px solid $curious-blue;
+    border-radius: 4px;
+    background-color: $white;
+    padding: 5px;
+    position: absolute;
+    right: 15px;
+    top: 14px;
+    cursor: pointer;
+  }
+
+  &__sliders-icon {
+    color: $curious-blue;
+  }
+
+  &__memo-text-area {
+    &__input {
+      padding: 6px 10px;
+    }
+  }
+
   &__footer {
     height: 92px;
     width: 100%;
@@ -573,8 +605,7 @@
     justify-content: space-evenly;
     align-items: center;
     border-top: 1px solid $alto;
-    position: absolute;
-    bottom: 0;
+    margin-top: 29px;
   }
 
   &__next-btn,
@@ -607,4 +638,155 @@
     color: $dusty-gray;
     border-color: $dusty-gray;
   }
+
+  &__customize-gas {
+    border: 1px solid #D8D8D8;
+    border-radius: 4px;
+    background-color: #FFFFFF;
+    box-shadow: 0 2px 4px 0 rgba(0,0,0,0.14);
+    font-family: Roboto;
+    display: flex;
+    flex-flow: column;
+
+    @media screen and (max-width: $break-small) {
+      width: 355px;
+      height: 598px;
+    }
+
+    &__header {
+      height: 52px;
+      border-bottom: 1px solid $alto;
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+      font-size: 22px;
+    }
+
+    &__title {
+      margin-left: 19.25px;
+    }
+
+    &__close::after {
+      content: '\00D7';
+      font-size: 1.8em;
+      color: $dusty-gray;
+      font-family: sans-serif;
+      cursor: pointer;
+      margin-right: 19.25px;
+    }
+
+    &__body {
+      height: 248px;
+      display: flex;
+
+      @media screen and (max-width: $break-small) {
+        width: 355px;
+        height: 470px;
+        flex-flow: column;
+      }
+    }
+
+    &__footer {
+      height: 75px;
+      border-top: 1px solid $alto;
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+      font-size: 22px;
+    }
+
+    &__buttons {
+      display: flex;
+      justify-content: space-between;
+      width: 181.75px;
+      margin-right: 21.25px;
+    }
+
+    &__revert, &__cancel, &__save {
+      display: flex;
+      justify-content: center;
+      align-items: center;
+      cursor: pointer;
+    }
+
+    &__revert {
+      color: $silver-chalice;
+      font-size: 16px;
+      margin-left: 21.25px;
+    }
+
+    &__cancel, &__save {
+      height: 34.64px;
+      width: 85.74px;
+      border: 1px solid $dusty-gray;
+      border-radius: 2px;
+      font-family: 'DIN OT';
+      font-size: 12px;
+      color: $dusty-gray;
+    }
+  }
+
+  &__gas-modal-card {
+    width: 360px;
+    display: flex;
+    flex-flow: column;
+    align-items: flex-start;
+    padding-left: 20px;
+
+    &__title {
+      height: 26px;
+      width: 84px;
+      color: $tundora;
+      font-family: Roboto;
+      font-size: 20px;
+      font-weight: 300;
+      line-height: 26px;
+      margin-top: 17px;
+    }
+
+    &__copy {
+      height: 38px;
+      width: 314px;
+      color: $tundora;
+      font-family: Roboto;
+      font-size: 14px;
+      line-height: 19px;
+      margin-top: 17px;
+    }
+
+    .customize-gas-input-wrapper {
+      margin-top: 17px;
+    }
+
+    .customize-gas-input {
+      height: 54px;
+      width: 315px;
+      border: 1px solid $geyser;
+      background-color: $white;
+      padding-left: 15px;
+    }
+
+    .gas-tooltip-input-arrows {
+      width: 32px;
+      height: 54px;
+      border-left: 1px solid #dadada;
+      font-size: 18px;
+      color: $tundora;
+      right: 0px;
+      padding: 1px 4px;
+      display: flex;
+      justify-content: space-around;
+      align-items: center;
+    }
+
+    input[type="number"]::-webkit-inner-spin-button {
+      -webkit-appearance: none;
+      display: none;
+    }
+
+    input[type="number"]:hover::-webkit-inner-spin-button {
+      -webkit-appearance: none;
+      display: none;
+    }
+  }
 }
diff --git a/ui/app/selectors.js b/ui/app/selectors.js
index fdbc5fcde..951161510 100644
--- a/ui/app/selectors.js
+++ b/ui/app/selectors.js
@@ -5,14 +5,16 @@ const selectors = {
   getSelectedIdentity,
   getSelectedAccount,
   getSelectedToken,
+  getSelectedTokenExchangeRate,
   conversionRateSelector,
   transactionsSelector,
+  accountsWithSendEtherInfoSelector,
+  getCurrentAccountWithSendEtherInfo,
 }
 
 module.exports = selectors
 
 function getSelectedAddress (state) {
-  // TODO: accounts is not defined. Is it needed?
   const selectedAddress = state.metamask.selectedAddress || Object.keys(state.metamask.accounts)[0]
 
   return selectedAddress
@@ -40,10 +42,41 @@ function getSelectedToken (state) {
   return selectedToken || null
 }
 
+function getSelectedTokenExchangeRate (state) {
+  const tokenExchangeRates = state.metamask.tokenExchangeRates
+  const selectedToken = getSelectedToken(state) || {}
+  const { symbol = '' } = selectedToken
+  
+  const pair = `${symbol.toLowerCase()}_eth`
+  const { rate: tokenExchangeRate = 0 } = tokenExchangeRates[pair] || {}
+
+  return tokenExchangeRate
+}
+
 function conversionRateSelector (state) {
   return state.metamask.conversionRate
 }
 
+function accountsWithSendEtherInfoSelector (state) {
+  const {
+    accounts,
+    identities,
+  } = state.metamask
+
+  const accountsWithSendEtherInfo = Object.entries(accounts).map(([key, account]) => {
+    return Object.assign({}, account, identities[key])
+  })
+
+  return accountsWithSendEtherInfo
+}
+
+function getCurrentAccountWithSendEtherInfo (state) {
+  const currentAddress = getSelectedAddress(state)
+  const accounts = accountsWithSendEtherInfoSelector(state)
+
+  return accounts.find(({ address }) => address === currentAddress)
+}
+
 function transactionsSelector (state) {
   const { network, selectedTokenAddress } = state.metamask
   const unapprovedMsgs = valuesFor(state.metamask.unapprovedMsgs)
diff --git a/ui/app/send-v2.js b/ui/app/send-v2.js
index 47f8b18bd..af7586859 100644
--- a/ui/app/send-v2.js
+++ b/ui/app/send-v2.js
@@ -2,61 +2,135 @@ const { inherits } = require('util')
 const PersistentForm = require('../lib/persistent-form')
 const h = require('react-hyperscript')
 const connect = require('react-redux').connect
+
+const Identicon = require('./components/identicon')
 const FromDropdown = require('./components/send/from-dropdown')
 const ToAutoComplete = require('./components/send/to-autocomplete')
 const CurrencyDisplay = require('./components/send/currency-display')
+const MemoTextArea = require('./components/send/memo-textarea')
+const GasFeeDisplay = require('./components/send/gas-fee-display-v2')
 
-module.exports = connect(mapStateToProps)(SendTransactionScreen)
-
-function mapStateToProps (state) {
-  const mockAccounts = Array.from(new Array(5))
-    .map((v, i) => ({
-      identity: {
-        name: `Test Account Name ${i}`,
-        address: `0x02f567704cc6569127e18e3d00d2c85bcbfa6f0${i}`,
-      },
-      balancesToRender: {
-        primary: `100${i}.000001 ETH`,
-        secondary: `$30${i},000.00 USD`,
-      }
-    }))
-  const conversionRate = 301.0005
-
-  return {
-    accounts: mockAccounts,
-    conversionRate
-  }
-}
+const { showModal } = require('./actions')
+
+module.exports = SendTransactionScreen
 
 inherits(SendTransactionScreen, PersistentForm)
 function SendTransactionScreen () {
   PersistentForm.call(this)
 
   this.state = {
-    newTx: {
-      from: '',
-      to: '',
-      gasPrice: null,
-      gas: '0.001',
-      amount: '10', 
-      txData: null,
-      memo: '',
-    },
+    from: '',
+    to: '',
+    gasPrice: null,
+    gasLimit: null,
+    amount: '0x0', 
+    txData: null,
+    memo: '',
     dropdownOpen: false,
   }
 }
 
+SendTransactionScreen.prototype.componentWillMount = function () {
+  const {
+    updateTokenExchangeRate,
+    selectedToken = {},
+    getGasPrice,
+    estimateGas,
+    selectedAddress,
+    data,
+  } = this.props
+  const { symbol } = selectedToken || {}
+
+  const estimateGasParams = {
+    from: selectedAddress,
+    gas: '746a528800',
+  }
+
+  if (symbol) {
+    updateTokenExchangeRate(symbol)
+    Object.assign(estimateGasParams, { value: '0x0' })
+  }
+
+  if (data) {
+    Object.assign(estimateGasParams, { data })
+  }
+
+  Promise.all([
+    getGasPrice(),
+    estimateGas({
+      from: selectedAddress,
+      gas: '746a528800',
+    }),
+  ])
+  .then(([blockGasPrice, estimatedGas]) => {
+    this.setState({
+      gasPrice: blockGasPrice,
+      gasLimit: estimatedGas,
+    })
+  })
+}
+
+SendTransactionScreen.prototype.renderHeaderIcon = function () {
+  const { selectedToken } = this.props
+
+  return h('div.send-v2__send-header-icon-container', [
+    selectedToken
+      ? h(Identicon, {
+        diameter: 40,
+        address: selectedToken.address,
+      })
+      : h('img.send-v2__send-header-icon', { src: '../images/eth_logo.svg' })
+  ])
+}
+
+SendTransactionScreen.prototype.renderTitle = function () {
+  const { selectedToken } = this.props
+
+  return h('div.send-v2__title', [selectedToken ? 'Send Tokens' : 'Send Funds'])
+}
+
+SendTransactionScreen.prototype.renderCopy = function () {
+  const { selectedToken } = this.props
+
+  const tokenText = selectedToken ? 'tokens' : 'ETH'
+
+  return h('div', [
+
+    h('div.send-v2__copy', `Only send ${tokenText} to an Ethereum address.`),
+
+    h('div.send-v2__copy', 'Sending to a different crytpocurrency that is not Ethereum may result in permanent loss.'),
+
+  ])
+}
+
 SendTransactionScreen.prototype.render = function () {
-  const { accounts, conversionRate } = this.props
-  const { dropdownOpen, newTx } = this.state
-  const { to, amount, gas } = newTx
+  const {
+    accounts,
+    conversionRate,
+    tokenToUSDRate,
+    selectedToken,
+    showCustomizeGasModal,
+    selectedAccount,
+    primaryCurrency = 'ETH',
+  } = this.props
+
+  const {
+    dropdownOpen,
+    to,
+    amount,
+    gasLimit,
+    gasPrice,
+    memo,
+  } = this.state
+
+  const amountConversionRate = selectedToken ? tokenToUSDRate : conversionRate
 
   return (
 
     h('div.send-v2__container', [
       h('div.send-v2__header', {}, [
 
-        h('img.send-v2__send-eth-icon', { src: '../images/eth_logo.svg' }),
+        this.renderHeaderIcon(),
 
         h('div.send-v2__arrow-background', [
           h('i.fa.fa-lg.fa-arrow-circle-right.send-v2__send-arrow-icon'),
@@ -66,11 +140,9 @@ SendTransactionScreen.prototype.render = function () {
 
       ]),
 
-      h('div.send-v2__title', 'Send Funds'),
-
-      h('div.send-v2__copy', 'Only send ETH to an Ethereum address.'),
+      this.renderTitle(),
 
-      h('div.send-v2__copy', 'Sending to a different crytpocurrency that is not Ethereum may result in permanent loss.'),
+      this.renderCopy(),
 
       h('div.send-v2__form', {}, [
 
@@ -81,10 +153,11 @@ SendTransactionScreen.prototype.render = function () {
           h(FromDropdown, {
             dropdownOpen,
             accounts,
-            selectedAccount: accounts[0],
+            selectedAccount,
             setFromField: () => console.log('Set From Field'),
             openDropdown: () => this.setState({ dropdownOpen: true }),
             closeDropdown: () => this.setState({ dropdownOpen: false }),
+            conversionRate,
           }),
 
         ]),
@@ -95,13 +168,11 @@ SendTransactionScreen.prototype.render = function () {
 
           h(ToAutoComplete, {
             to,
-            identities: accounts.map(({ identity }) => identity),
+            accounts,
             onChange: (event) => {
               this.setState({
-                newTx: {
-                  ...this.state.newTx,
-                  to: event.target.value,
-                },
+                ...this.state,
+                to: event.target.value,
               })
             },
           }),
@@ -113,17 +184,15 @@ SendTransactionScreen.prototype.render = function () {
           h('div.send-v2__form-label', 'Amount:'),
 
           h(CurrencyDisplay, {
-            primaryCurrency: 'ETH',
+            primaryCurrency,
             convertedCurrency: 'USD',
             value: amount,
-            conversionRate,
+            conversionRate: amountConversionRate,
             convertedPrefix: '$',
             handleChange: (value) => {
               this.setState({
-                newTx: {
-                  ...this.state.newTx,
-                  amount: value,
-                },
+                ...this.state,
+                amount: value,
               })
             }
           }),          
@@ -134,14 +203,34 @@ SendTransactionScreen.prototype.render = function () {
 
           h('div.send-v2__form-label', 'Gas fee:'),
 
-          h(CurrencyDisplay, {
-            primaryCurrency: 'ETH',
-            convertedCurrency: 'USD',
-            value: gas,
+          h(GasFeeDisplay, {
+            gasLimit,
+            gasPrice,
             conversionRate,
-            convertedPrefix: '$',
-            readOnly: true,
-          }),          
+            onClick: showCustomizeGasModal,
+          }),
+
+          h('div.send-v2__sliders-icon-container', {
+            onClick: showCustomizeGasModal,
+          }, [
+            h('i.fa.fa-sliders.send-v2__sliders-icon'),
+          ])          
+
+        ]),
+
+        h('div.send-v2__form-row', [
+
+          h('div.send-v2__form-label', 'Transaction Memo:'),
+
+          h(MemoTextArea, {
+            memo,
+            onChange: (event) => {
+              this.setState({
+                ...this.state,
+                memo: event.target.value,
+              })
+            },
+          }),
 
         ]),