82 lines
2.5 KiB
TypeScript
82 lines
2.5 KiB
TypeScript
// Copyright 2017-2023 @polkadot/react-params authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { Codec, TypeDef } from '@polkadot/types/types';
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import type { Props, RawParamOnChangeValue } from '../types';
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import React, { useCallback, useEffect, useState } from 'react';
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import styled from 'styled-components';
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import { Toggle } from '@polkadot/react-components';
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import { Option } from '@polkadot/types';
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import { isU8a, u8aConcat } from '@polkadot/util';
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import { useTranslation } from '../translate';
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import Param from './index';
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const DEF_VALUE = { isValid: true, value: undefined };
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const OPT_PREFIX = new Uint8Array([1]);
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function OptionDisplay ({ className = '', defaultValue: _defaultValue, isDisabled, name, onChange, onEnter, onEscape, registry, type: { sub, withOptionActive } }: Props): React.ReactElement<Props> {
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const { t } = useTranslation();
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const [isActive, setIsActive] = useState(() => withOptionActive || !!(_defaultValue && _defaultValue.value instanceof Option && _defaultValue.value.isSome) || false);
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const [defaultValue] = useState(
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() => isActive || isDisabled
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? _defaultValue && (
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_defaultValue.value instanceof Option && _defaultValue.value.isSome
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? { isValid: _defaultValue.isValid, value: (_defaultValue.value as Option<Codec>).unwrap() }
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: DEF_VALUE
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)
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: DEF_VALUE
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);
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useEffect((): void => {
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!isActive && onChange && onChange({
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isValid: true,
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value: null
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});
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}, [isActive, onChange]);
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const _onChange = useCallback(
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(value: RawParamOnChangeValue) =>
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onChange && onChange(
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value.isValid && isU8a(value.value) && !withOptionActive && isActive
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? { isValid: true, value: u8aConcat(OPT_PREFIX, value.value) }
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: value
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),
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[isActive, onChange, withOptionActive]
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);
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return (
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<div className={className}>
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<Param
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defaultValue={
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isActive
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? defaultValue
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: DEF_VALUE}
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isDisabled={isDisabled || !isActive}
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isInOption
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isOptional={!isActive && !isDisabled}
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name={name}
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onChange={_onChange}
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onEnter={onEnter}
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onEscape={onEscape}
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registry={registry}
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type={sub as TypeDef}
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/>
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{!isDisabled && (
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<Toggle
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isOverlay
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label={t<string>('include option')}
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onChange={setIsActive}
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value={isActive}
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/>
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)}
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</div>
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);
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}
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export default React.memo(styled(OptionDisplay)`
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position: relative;
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`);
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