Select全选功能

[Chauncydecat]

#####我尝试通过高阶组件实现Select全选功能，可惜antd2.x并不支持，能否在vtx-ui2.x版本中加入这个功能？

import React from 'react'
import { Select } from 'antd'
const { Option } = Select

class SelectAll extends React.Component {
    constructor(props) {
        super(props)
    }
    componentDidMount() {
        // console.log(this.props.children)
    }
    componentDidUpdate() {
        console.log('selectChildren', this.props.children)
    }
    onChange = (key, item) => {
        if (key.includes('all')) {
            if (this.props.value?.length === this.props.children?.length) {
                this.props.onChange([])
            } else {
                let keyArr = this.props.children?.map(x => {
                    return x.key
                })
                this.props.onChange(keyArr)
            }
        } else {
            this.props.onChange(key)
        }
    }

    render() {
        console.log('this.props.children>>>>>>>>>', this.props.children);
        return (
            <Select mode="multiple" {...this.props} onChange={this.onChange}>
                <Option key="all">
                    全选
                </Option>
                {!!this.props.children?.length ? this.props.children : null}
            </Select>
        )
    }
}
export default SelectAll;