Adds toggle for primary currency (#5421)

* Add UnitInput component

* Add CurrencyInput component

* Add UserPreferencedCurrencyInput component

* Add UserPreferencedCurrencyDisplay component

* Add updatePreferences action

* Add styles for CurrencyInput, CurrencyDisplay, and UnitInput

* Update SettingsTab page with Primary Currency toggle

* Refactor currency displays and inputs to use UserPreferenced displays and inputs

* Add TokenInput component

* Add UserPreferencedTokenInput component

* Use TokenInput in the send screen

* Fix unit tests

* Fix e2e and integration tests

* Remove send/CurrencyDisplay component

* Replace diamond unicode character with Eth logo. Fix typos

1 files changed, 20 insertions, 0 deletions

diff --git a/ui/app/components/user-preferenced-currency-input/user-preferenced-currency-input.component.js b/ui/app/components/user-preferenced-currency-input/user-preferenced-currency-input.component.js
new file mode 100644
index 000000000..6e0e00a1d
--- /dev/null
+++ b/ui/app/components/user-preferenced-currency-input/user-preferenced-currency-input.component.js
@@ -0,0 +1,20 @@
+import React, { PureComponent } from 'react'
+import PropTypes from 'prop-types'
+import CurrencyInput from '../currency-input'
+
+export default class UserPreferencedCurrencyInput extends PureComponent {
+  static propTypes = {
+    useETHAsPrimaryCurrency: PropTypes.bool,
+  }
+
+  render () {
+    const { useETHAsPrimaryCurrency, ...restProps } = this.props
+
+    return (
+      <CurrencyInput
+        {...restProps}
+        useFiat={!useETHAsPrimaryCurrency}
+      />
+    )
+  }
+}