84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
// Copyright 2017-2020 @polkadot/react-components authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import { DeriveBalancesAll } from '@polkadot/api-derive/types';
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import BN from 'bn.js';
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import React, { useCallback, useEffect, useState, useMemo } from 'react';
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import { useApi, useCall } from '@polkadot/react-hooks';
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import { BalanceVoting } from '@polkadot/react-query';
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import { isBn } from '@polkadot/util';
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import InputBalance from './InputBalance';
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import { useTranslation } from './translate';
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interface Props {
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accountId?: string | null;
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autoFocus?: boolean;
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isCouncil?: boolean;
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onChange: (value: BN) => void;
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}
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interface ValueState {
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selectedId?: string | null;
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value?: BN;
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}
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function VoteValue ({ accountId, autoFocus, isCouncil, onChange }: Props): React.ReactElement<Props> | null {
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const { t } = useTranslation();
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const { api } = useApi();
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const allBalances = useCall<DeriveBalancesAll>(api.derive.balances.all, [accountId]);
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const [{ selectedId, value }, setValue] = useState<ValueState>({});
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const maxVotingBalance = useMemo(() =>
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isCouncil
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? allBalances?.votingBalance.add(allBalances?.reservedBalance)
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: allBalances?.votingBalance
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, [allBalances, isCouncil]);
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useEffect((): void => {
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// if the set accountId changes and the new balances is for that id, set it
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(accountId !== selectedId) && allBalances && allBalances.accountId.eq(accountId) && setValue({
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selectedId: accountId,
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value: allBalances.lockedBalance
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});
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}, [allBalances, accountId, maxVotingBalance, selectedId]);
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// only do onChange to parent when the BN value comes in, not our formatted version
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useEffect((): void => {
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isBn(value) && onChange(value);
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}, [onChange, value]);
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const _setValue = useCallback(
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(value?: BN) => setValue(({ selectedId }) => ({ selectedId, value })),
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[]
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);
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const isDisabled = accountId !== selectedId;
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return (
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<InputBalance
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autoFocus={autoFocus}
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defaultValue={accountId !== selectedId
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? undefined
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: allBalances?.lockedBalance
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}
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help={t<string>('The amount that is associated with this vote. This value is is locked for the duration of the vote.')}
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isDisabled={isDisabled}
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isZeroable
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label={t<string>('vote value')}
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labelExtra={
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<BalanceVoting
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isCouncil={isCouncil}
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label={<label>{t<string>('voting balance')}</label>}
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params={accountId}
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/>
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}
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maxValue={maxVotingBalance}
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onChange={_setValue}
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/>
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);
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}
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export default React.memo(VoteValue);
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