114 lines
3.0 KiB
TypeScript
114 lines
3.0 KiB
TypeScript
import React from 'react';
|
|
import { connect } from 'react-redux';
|
|
import {
|
|
fromTokenBase,
|
|
getDecimal,
|
|
UnitKey,
|
|
Wei,
|
|
TokenValue
|
|
} from 'libs/units';
|
|
import { formatNumber as format } from 'utils/formatters';
|
|
import Spinner from 'components/ui/Spinner';
|
|
import { getOffline } from 'selectors/config';
|
|
import { AppState } from 'reducers';
|
|
|
|
interface Props {
|
|
/**
|
|
* @description base value of the token / ether, incase of waiting for API calls, we can return '???'
|
|
* @type {TokenValue | Wei}
|
|
* @memberof Props
|
|
*/
|
|
value?: TokenValue | Wei | null;
|
|
/**
|
|
* @description Symbol to display to the right of the value, such as 'ETH'
|
|
* @type {string}
|
|
* @memberof Props
|
|
*/
|
|
symbol?: string;
|
|
/**
|
|
* @description display the long balance, if false, trims it to 3 decimal places, if a number is specified then that number is the number of digits to be displayed.
|
|
* @type {boolean}
|
|
* @memberof Props
|
|
*/
|
|
displayShortBalance?: boolean | number;
|
|
}
|
|
|
|
interface EthProps extends Props {
|
|
unit: UnitKey;
|
|
}
|
|
interface TokenProps extends Props {
|
|
decimal: number;
|
|
}
|
|
|
|
const isEthereumUnit = (param: EthProps | TokenProps): param is EthProps =>
|
|
!!(param as EthProps).unit;
|
|
|
|
const UnitDisplay: React.SFC<EthProps | TokenProps> = params => {
|
|
const { value, symbol, displayShortBalance } = params;
|
|
let element;
|
|
|
|
if (!value) {
|
|
element = <Spinner size="x1" />;
|
|
} else {
|
|
const convertedValue = isEthereumUnit(params)
|
|
? fromTokenBase(value, getDecimal(params.unit))
|
|
: fromTokenBase(value, params.decimal);
|
|
|
|
let formattedValue;
|
|
|
|
if (displayShortBalance) {
|
|
const digits =
|
|
typeof displayShortBalance === 'number' ? displayShortBalance : 4;
|
|
formattedValue = format(convertedValue, digits);
|
|
// If the formatted value was too low, display something like < 0.01
|
|
if (
|
|
parseFloat(formattedValue) === 0 &&
|
|
parseFloat(convertedValue) !== 0
|
|
) {
|
|
const padding = digits !== 0 ? `.${'0'.repeat(digits - 1)}1` : '';
|
|
formattedValue = `< 0${padding}`;
|
|
}
|
|
} else {
|
|
formattedValue = convertedValue;
|
|
}
|
|
|
|
element = (
|
|
<span>
|
|
{formattedValue}
|
|
{symbol ? ` ${symbol}` : ''}
|
|
</span>
|
|
);
|
|
}
|
|
|
|
return <ConnectedOfflineDisplay>{element}</ConnectedOfflineDisplay>;
|
|
};
|
|
|
|
export default UnitDisplay;
|
|
|
|
/**
|
|
* @description Helper component for displaying alternate text when offline.
|
|
* Circumvents typescript issue with union props on connected components.
|
|
*/
|
|
interface OfflineProps {
|
|
offline: AppState['config']['offline'];
|
|
children: React.ReactElement<string>;
|
|
}
|
|
|
|
class OfflineDisplay extends React.Component<OfflineProps> {
|
|
public render() {
|
|
if (this.props.offline) {
|
|
return <span>Balance isn't available offline</span>;
|
|
} else {
|
|
return this.props.children;
|
|
}
|
|
}
|
|
}
|
|
|
|
function mapStateToOfflineProps(state: AppState) {
|
|
return {
|
|
offline: getOffline(state)
|
|
};
|
|
}
|
|
|
|
const ConnectedOfflineDisplay = connect(mapStateToOfflineProps)(OfflineDisplay);
|