@itwin/itwinui-react/esm/core/Buttons/DropdownButton.js

A react component library for iTwinUI

import * as React from 'react';
import cx from 'classnames';
import { Button } from './Button.js';
import { DropdownMenu } from '../DropdownMenu/DropdownMenu.js';
import { SvgCaretDownSmall, SvgCaretUpSmall } from '../../utils/index.js';
export const DropdownButton = React.forwardRef((props, forwardedRef) => {
  let {
    menuItems,
    className,
    size,
    styleType,
    children,
    dropdownMenuProps,
    ...rest
  } = props;
  let [isMenuOpen, setIsMenuOpen] = React.useState(false);
  return React.createElement(
    DropdownMenu,
    {
      menuItems: menuItems,
      matchWidth: true,
      visible: isMenuOpen,
      ...dropdownMenuProps,
      onVisibleChange: (open) => {
        setIsMenuOpen(open);
        dropdownMenuProps?.onVisibleChange?.(open);
      },
    },
    React.createElement(
      Button,
      {
        className: cx('iui-button-dropdown', className),
        size: size,
        styleType: styleType,
        endIcon: isMenuOpen
          ? React.createElement(SvgCaretUpSmall, {
              'aria-hidden': true,
            })
          : React.createElement(SvgCaretDownSmall, {
              'aria-hidden': true,
            }),
        ref: forwardedRef,
        ...rest,
      },
      children,
    ),
  );
});
if ('development' === process.env.NODE_ENV)
  DropdownButton.displayName = 'DropdownButton';