113 lines
2.5 KiB
TypeScript
113 lines
2.5 KiB
TypeScript
// Copyright 2017-2019 @polkadot/ui-app 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 { Props } from '../types';
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import React from 'react';
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import { Compact } from '@polkadot/types/codec';
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import { Input } from '@polkadot/ui-app/index';
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import { hexToU8a, u8aConcat } from '@polkadot/util';
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import Bare from './Bare';
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type State$Param = {
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isValid: boolean,
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u8a: Uint8Array
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};
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type State = {
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key: State$Param,
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value: State$Param
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};
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export default class KeyValue extends React.PureComponent<Props, State> {
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state: State = {
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key: {
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isValid: false,
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u8a: new Uint8Array([])
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},
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value: {
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isValid: false,
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u8a: new Uint8Array([])
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}
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};
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render () {
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const { className, isDisabled, label, style, withLabel } = this.props;
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const { key, value } = this.state;
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return (
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<Bare
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className={className}
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style={style}
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>
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<Input
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className='medium'
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isDisabled={isDisabled}
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isError={!key.isValid}
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label={label}
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onChange={this.onChangeKey}
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placeholder='0x...'
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type='text'
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withLabel={withLabel}
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/>
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<Input
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className='medium'
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isDisabled={isDisabled}
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isError={!value.isValid}
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onChange={this.onChangeValue}
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placeholder='0x...'
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type='text'
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withLabel={withLabel}
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/>
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</Bare>
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);
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}
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static createParam (hex: string, length: number = -1): State$Param {
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let u8a;
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try {
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u8a = hexToU8a(hex);
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} catch (error) {
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u8a = new Uint8Array([]);
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}
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const isValid = length !== -1
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? u8a.length === length
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: u8a.length !== 0;
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return {
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isValid,
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u8a: Compact.addLengthPrefix(u8a)
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};
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}
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nextState (newState: State): void {
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this.setState(
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(prevState: State, { onChange }: Props) => {
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const { key = prevState.key, value = prevState.value } = newState;
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onChange && onChange({
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isValid: key.isValid && value.isValid,
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value: u8aConcat(
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key.u8a,
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value.u8a
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)
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});
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return newState;
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}
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);
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}
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onChangeKey = (key: string): void => {
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this.nextState({ key: KeyValue.createParam(key) } as State);
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}
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onChangeValue = (value: string): void => {
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this.nextState({ value: KeyValue.createParam(value) } as State);
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}
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}
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