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Sebastian 2023-02-08 17:40:00 -03:00
parent 603efbd073
commit 9b0d887a1b
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1 changed files with 29 additions and 11 deletions
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40
packages/taler-wallet-webextension/src/components/AmountField.tsx
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@ -31,6 +31,9 @@ import { TextField } from "../mui/TextField.js";
const HIGH_DENOM_SYMBOL = ["", "K", "M", "G", "T", "P"];
const LOW_DENOM_SYMBOL = ["", "m", "mm", "n", "p", "f"];
/**
* Show normalized value based on the currency unit
*/
export function AmountField({
label,
handler,
@ -77,7 +80,7 @@ export function AmountField({
const previousValue = Amounts.stringifyValue(handler.value, decimalPlaces);
const normal = denormalize(handler.value, unit) ?? handler.value;
const normal = normalize(handler.value, unit) ?? handler.value;
let textValue = Amounts.stringifyValue(normal, decimalPlaces);
if (decimalPlaces === 0) {
@ -95,25 +98,25 @@ export function AmountField({
}
try {
//remove all but last dot
const parsed = value.replace(/(\.)(?=.*\1)/g, "");
const parts = parsed.split(".");
const withoutDots = value.replace(/(\.)(?=.*\1)/g, "");
const parts = withoutDots.split(".");
setDecimalPlaces(parts.length === 1 ? undefined : parts[1].length);
//FIXME: should normalize before parsing
//parsing first add some restriction on the rage of the values
const real = parseValue(currency, parsed);
const parsed = parseValue(currency, withoutDots);
if (!real || real.value < 0) {
if (!parsed || parsed.value < 0) {
return previousValue;
}
const realNormalized = normalize(real, unit);
const realValue = denormalize(parsed, unit);
// console.log(real, unit, normal);
if (realNormalized && handler.onInput) {
handler.onInput(realNormalized);
if (realValue && handler.onInput) {
handler.onInput(realValue);
}
return parsed;
return withoutDots;
} catch (e) {
// do nothing
}
@ -191,7 +194,14 @@ function parseValue(currency: string, s: string): AmountJson | undefined {
return { currency, fraction, value };
}
function normalize(amount: AmountJson, unit: number): AmountJson | undefined {
/**
* Return the real value of a normalized unit
* If the value is 20 and the unit is kilo == 1000 the returned value will be amount * 1000
* @param amount
* @param unit
* @returns
*/
function denormalize(amount: AmountJson, unit: number): AmountJson | undefined {
if (unit === 1 || Amounts.isZero(amount)) return amount;
const result =
unit < 1
@ -200,7 +210,15 @@ function normalize(amount: AmountJson, unit: number): AmountJson | undefined {
return result;
}
function denormalize(amount: AmountJson, unit: number): AmountJson | undefined {
/**
* Return the amount in the current unit.
* If the value is 20000 and the unit is kilo == 1000 and the returned value will be amount / unit
*
* @param amount
* @param unit
* @returns
*/
function normalize(amount: AmountJson, unit: number): AmountJson | undefined {
if (unit === 1 || Amounts.isZero(amount)) return amount;
const result =
unit < 1