Add token selection to the send screen (#6445)

* Move send to pages/

* Fix unit tests

* Finish UI

* Integrate asset dropdown to send actions

* Remove console.log

* Hide asset change during edit

* Enable switch from send token to seand eth

* Enable switching from token to eth when editing

* Fix linter

* Fixing test

* Fix unit tests

* Fix linter

* Fix react warning; remove console.log

* fix flat test

* Add metrics

* Address code review comments

* Consistent spacing between send screen form rows.

* Reduce height of gas buttons on send screen.

* Make send screen gas button height dependent on size of contents.

2 files changed, 130 insertions, 0 deletions

diff --git a/ui/app/pages/send/to-autocomplete/index.js b/ui/app/pages/send/to-autocomplete/index.js
new file mode 100644
index 000000000..244d301d1
--- /dev/null
+++ b/ui/app/pages/send/to-autocomplete/index.js
@@ -0,0 +1 @@
+export { default } from './to-autocomplete.js'
diff --git a/ui/app/pages/send/to-autocomplete/to-autocomplete.js b/ui/app/pages/send/to-autocomplete/to-autocomplete.js
new file mode 100644
index 000000000..b246413fb
--- /dev/null
+++ b/ui/app/pages/send/to-autocomplete/to-autocomplete.js
@@ -0,0 +1,129 @@
+const Component = require('react').Component
+const PropTypes = require('prop-types')
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const AccountListItem = require('../account-list-item/account-list-item.component').default
+const connect = require('react-redux').connect
+const Tooltip = require('../../../components/ui/tooltip')
+const checksumAddress = require('../../../helpers/utils/util').checksumAddress
+
+ToAutoComplete.contextTypes = {
+  t: PropTypes.func,
+}
+
+module.exports = connect()(ToAutoComplete)
+
+
+inherits(ToAutoComplete, Component)
+function ToAutoComplete () {
+  Component.call(this)
+
+  this.state = { accountsToRender: [] }
+}
+
+ToAutoComplete.prototype.getListItemIcon = function (listItemAddress, toAddress) {
+  const listItemIcon = h(`i.fa.fa-check.fa-lg`, { style: { color: '#02c9b1' } })
+
+  return toAddress && listItemAddress === toAddress
+    ? listItemIcon
+    : null
+}
+
+ToAutoComplete.prototype.renderDropdown = function () {
+  const {
+    closeDropdown,
+    onChange,
+    to,
+  } = this.props
+  const { accountsToRender } = this.state
+
+  return accountsToRender.length && h('div', {}, [
+
+    h('div.send-v2__from-dropdown__close-area', {
+      onClick: closeDropdown,
+    }),
+
+    h('div.send-v2__from-dropdown__list', {}, [
+
+      ...accountsToRender.map(account => h(AccountListItem, {
+        account,
+        className: 'account-list-item__dropdown',
+        handleClick: () => {
+          onChange(checksumAddress(account.address))
+          closeDropdown()
+        },
+        icon: this.getListItemIcon(account.address, to),
+        displayBalance: false,
+        displayAddress: true,
+      })),
+
+    ]),
+
+  ])
+}
+
+ToAutoComplete.prototype.handleInputEvent = function (event = {}, cb) {
+  const {
+    to,
+    accounts,
+    closeDropdown,
+    openDropdown,
+  } = this.props
+
+  const matchingAccounts = accounts.filter(({ address }) => address.match(to || ''))
+  const matches = matchingAccounts.length
+
+  if (!matches || matchingAccounts[0].address === to) {
+    this.setState({ accountsToRender: [] })
+    event.target && event.target.select()
+    closeDropdown()
+  } else {
+    this.setState({ accountsToRender: matchingAccounts })
+    openDropdown()
+  }
+  cb && cb(event.target.value)
+}
+
+ToAutoComplete.prototype.componentDidUpdate = function (nextProps, nextState) {
+  if (this.props.to !== nextProps.to) {
+    this.handleInputEvent()
+  }
+}
+
+ToAutoComplete.prototype.render = function () {
+  const {
+    to,
+    dropdownOpen,
+    onChange,
+    inError,
+    qrScanner,
+  } = this.props
+
+  return h('div.send-v2__to-autocomplete', {}, [
+
+    h(`input.send-v2__to-autocomplete__input${qrScanner ? '.with-qr' : ''}`, {
+      placeholder: this.context.t('recipientAddress'),
+      className: inError ? `send-v2__error-border` : '',
+      value: to,
+      onChange: event => onChange(event.target.value),
+      onFocus: event => this.handleInputEvent(event),
+      style: {
+        borderColor: inError ? 'red' : null,
+      },
+    }),
+    qrScanner && h(Tooltip, {
+      title: this.context.t('scanQrCode'),
+      position: 'bottom',
+    }, h(`i.fa.fa-qrcode.fa-lg.send-v2__to-autocomplete__qr-code`, {
+      style: { color: '#33333' },
+      onClick: () => this.props.scanQrCode(),
+    })),
+    !to && h(`i.fa.fa-caret-down.fa-lg.send-v2__to-autocomplete__down-caret`, {
+      style: { color: '#dedede' },
+      onClick: () => this.handleInputEvent(),
+    }),
+
+    dropdownOpen && this.renderDropdown(),
+
+  ])
+}