@itwin/itwinui-react/esm/core/Tree/TreeNodeExpander.js

A react component library for iTwinUI

import * as React from 'react';
import cx from 'classnames';
import { SvgChevronRight, SvgChevronRightSmall } from '../../utils/index.js';
import { IconButton } from '../Buttons/IconButton.js';
import { TreeContext } from './TreeContext.js';
export const TreeNodeExpander = React.forwardRef((props, ref) => {
  let { isExpanded, expanderIconProps = {}, ...rest } = props;
  let size = React.useContext(TreeContext)?.size ?? 'default';
  let ChevronIcon = 'small' === size ? SvgChevronRightSmall : SvgChevronRight;
  return React.createElement(
    IconButton,
    {
      styleType: 'borderless',
      size: 'small',
      'aria-label': isExpanded ? 'Collapse' : 'Expand',
      ref: ref,
      ...rest,
    },
    React.createElement(ChevronIcon, {
      ...expanderIconProps,
      className: cx(
        'iui-tree-node-content-expander-icon',
        expanderIconProps?.className,
        {
          'iui-tree-node-content-expander-icon-expanded': isExpanded,
        },
      ),
    }),
  );
});
if ('development' === process.env.NODE_ENV)
  TreeNodeExpander.displayName = 'TreeNode.Expander';