mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-11-27 12:56:01 +01:00
60 lines
2.3 KiB
JavaScript
60 lines
2.3 KiB
JavaScript
import { useSelector } from 'react-redux'
|
|
import {
|
|
getPreferences,
|
|
getShouldShowFiat,
|
|
getNativeCurrency,
|
|
} from '../selectors'
|
|
import { PRIMARY, SECONDARY, ETH } from '../helpers/constants/common'
|
|
|
|
/**
|
|
* Defines the shape of the options parameter for useUserPreferencedCurrency
|
|
* @typedef {Object} UseUserPreferencedCurrencyOptions
|
|
* @property {number} [numberOfDecimals] - Number of significant decimals to display
|
|
* @property {number} [ethNumberOfDecimals] - Number of significant decimals to display
|
|
* when using ETH
|
|
* @property {number} [fiatNumberOfDecimals] - Number of significant decimals to display
|
|
* when using fiat
|
|
*/
|
|
|
|
/**
|
|
* Defines the return shape of useUserPreferencedCurrency
|
|
* @typedef {Object} UserPreferredCurrency
|
|
* @property {string} currency - the currency type to use (eg: 'ETH', 'usd')
|
|
* @property {number} numberOfDecimals - Number of significant decimals to display
|
|
*/
|
|
|
|
/**
|
|
* useUserPreferencedCurrency
|
|
*
|
|
* returns an object that contains what currency to use for displaying values based
|
|
* on the user's preference settings, as well as the significant number of decimals
|
|
* to display based on the currency
|
|
* @param {"PRIMARY" | "SECONDARY"} type - what display type is being rendered
|
|
* @param {UseUserPreferencedCurrencyOptions} opts - options to override default values
|
|
* @return {UserPreferredCurrency}
|
|
*/
|
|
export function useUserPreferencedCurrency(type, opts = {}) {
|
|
const nativeCurrency = useSelector(getNativeCurrency)
|
|
const { useNativeCurrencyAsPrimaryCurrency } = useSelector(getPreferences)
|
|
const showFiat = useSelector(getShouldShowFiat)
|
|
|
|
let currency, numberOfDecimals
|
|
if (
|
|
!showFiat ||
|
|
(type === PRIMARY && useNativeCurrencyAsPrimaryCurrency) ||
|
|
(type === SECONDARY && !useNativeCurrencyAsPrimaryCurrency)
|
|
) {
|
|
// Display ETH
|
|
currency = nativeCurrency || ETH
|
|
numberOfDecimals = opts.numberOfDecimals || opts.ethNumberOfDecimals || 6
|
|
} else if (
|
|
(type === SECONDARY && useNativeCurrencyAsPrimaryCurrency) ||
|
|
(type === PRIMARY && !useNativeCurrencyAsPrimaryCurrency)
|
|
) {
|
|
// Display Fiat
|
|
numberOfDecimals = opts.numberOfDecimals || opts.fiatNumberOfDecimals || 2
|
|
}
|
|
|
|
return { currency, numberOfDecimals }
|
|
}
|