72 lines
1.7 KiB
TypeScript
72 lines
1.7 KiB
TypeScript
// Copyright 2017-2020 @polkadot/app-explorer 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 React, { useCallback, useState } from 'react';
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import styled from 'styled-components';
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import { Button, FilterOverlay, Input } from '@polkadot/react-components';
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import { isHex } from '@polkadot/util';
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import { useTranslation } from './translate';
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interface Props {
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className?: string;
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value?: string;
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}
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interface State {
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value: string;
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isValid: boolean;
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}
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function stateFromValue (value: string): State {
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return {
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isValid: isHex(value, 256) || /^\d+$/.test(value),
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value
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};
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}
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function Query ({ className, value: propsValue }: Props): React.ReactElement<Props> {
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const { t } = useTranslation();
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const [{ isValid, value }, setState] = useState(stateFromValue(propsValue || ''));
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const _setHash = useCallback(
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(value: string): void => setState(stateFromValue(value)),
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[]
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);
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const _onQuery = useCallback(
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(): void => {
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if (isValid && value.length !== 0) {
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window.location.hash = `/explorer/query/${value}`;
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}
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},
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[isValid, value]
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);
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return (
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<FilterOverlay className={className}>
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<Input
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className='explorer--query'
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defaultValue={propsValue}
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isError={!isValid && value.length !== 0}
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onChange={_setHash}
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onEnter={_onQuery}
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placeholder={t('block hash or number to query')}
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withLabel={false}
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>
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<Button
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icon='play'
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onClick={_onQuery}
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/>
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</Input>
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</FilterOverlay>
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);
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}
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export default React.memo(styled(Query)`
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.explorer--query {
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width: 20em;
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}
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`);
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