ant-design/components/tree-select/index.tsx

import React from 'react';
import RcTreeSelect, { TreeNode, SHOW_ALL, SHOW_PARENT, SHOW_CHILD } from 'rc-tree-select';
import classNames from 'classnames';
import { TreeSelectProps } from './interface';
import LocaleReceiver from '../locale-provider/LocaleReceiver';
import warning from '../_util/warning';

export { TreeData, TreeSelectProps } from './interface';

export default class TreeSelect extends React.Component<TreeSelectProps, any> {
  static TreeNode = TreeNode;
  static SHOW_ALL = SHOW_ALL;
  static SHOW_PARENT = SHOW_PARENT;
  static SHOW_CHILD = SHOW_CHILD;

  static defaultProps = {
    prefixCls: 'ant-select',
    transitionName: 'slide-up',
    choiceTransitionName: 'zoom',
    showSearch: false,
    dropdownClassName: 'ant-select-tree-dropdown',
  };

  constructor(props) {
    super(props);

    warning(
      props.multiple !== false || !props.treeCheckable,
      '`multiple` will alway be `true` when `treeCheckable` is true',
    );
  }

  renderTreeSelect = (locale) => {
    const {
      prefixCls,
      className,
      size,
      notFoundContent,
      dropdownStyle,
      ...restProps,
    } = this.props;

    const cls = classNames({
      [`${prefixCls}-lg`]: size === 'large',
      [`${prefixCls}-sm`]: size === 'small',
    }, className);

    let checkable = restProps.treeCheckable;
    if (checkable) {
      checkable = <span className={`${prefixCls}-tree-checkbox-inner`} />;
    }
    return (
      <RcTreeSelect
        {...restProps}
        prefixCls={prefixCls}
        className={cls}
        dropdownStyle={{ maxHeight: '100vh', overflow: 'auto', ...dropdownStyle }}
        treeCheckable={checkable}
        notFoundContent={notFoundContent || locale.notFoundContent}
      />
    );
  }

  render() {
    return (
      <LocaleReceiver
        componentName="Select"
        defaultLocale={{}}
      >
        {this.renderTreeSelect}
      </LocaleReceiver>
    );
  }
}