@itwin/itwinui-react/DEV-cjs/core/ComboBox/ComboBoxMenu.js

A react component library for iTwinUI

'use strict';
Object.defineProperty(exports, '__esModule', {
  value: true,
});
Object.defineProperty(exports, 'ComboBoxMenu', {
  enumerable: true,
  get: function () {
    return ComboBoxMenu;
  },
});
const _interop_require_default = require('@swc/helpers/_/_interop_require_default');
const _interop_require_wildcard = require('@swc/helpers/_/_interop_require_wildcard');
const _react = /*#__PURE__*/ _interop_require_wildcard._(require('react'));
const _classnames = /*#__PURE__*/ _interop_require_default._(
  require('classnames'),
);
const _index = require('../../utils/index.js');
const _helpers = require('./helpers.js');
const _List = require('../List/List.js');
const VirtualizedComboBoxMenu = (props) => {
  let { children, ...rest } = props;
  let { filteredOptions, getMenuItem, focusedIndex } = (0,
  _index.useSafeContext)(_helpers.ComboBoxStateContext);
  let { menuRef } = (0, _index.useSafeContext)(_helpers.ComboBoxRefsContext);
  let mostlySubLabeled = _react.useMemo(() => {
    let numberOfSubLabels = 0;
    for (let i = 0; i < Math.min(5, filteredOptions.length); i++)
      if (filteredOptions[i].sublabel) numberOfSubLabels++;
    return numberOfSubLabels >= Math.min(3, filteredOptions.length);
  }, [filteredOptions]);
  let focusedVisibleIndex = _react.useMemo(() => {
    let currentElement = menuRef.current?.querySelector(
      `[data-iui-index="${focusedIndex}"]`,
    );
    if (!currentElement) return focusedIndex;
    return Number(
      currentElement.getAttribute('data-iui-filtered-index') ?? focusedIndex,
    );
  }, [focusedIndex, menuRef]);
  let { virtualizer, css: virtualizerCss } = (0, _index.useVirtualScroll)({
    count: filteredOptions.length || 1,
    getScrollElement: () => menuRef.current,
    estimateSize: () => (mostlySubLabeled ? 48 : 36),
    gap: -1,
  });
  (0, _index.useLayoutEffect)(() => {
    virtualizer.scrollToIndex(focusedVisibleIndex);
  }, [virtualizer, focusedVisibleIndex]);
  let virtualItemRenderer = _react.useCallback(
    (virtualItem) => {
      let menuItem =
        filteredOptions.length > 0
          ? getMenuItem(filteredOptions[virtualItem.index], virtualItem.index)
          : children;
      return _react.cloneElement(menuItem, {
        key: virtualItem.key,
        ref: virtualizer.measureElement,
        'data-iui-virtualizer': 'item',
        style: {
          width: '100%',
          transform: `translateY(${virtualItem.start}px)`,
        },
      });
    },
    [filteredOptions, getMenuItem, children, virtualizer.measureElement],
  );
  return _react.createElement(
    'div',
    {
      style: {
        display: 'contents',
      },
    },
    _react.createElement(
      _index.ShadowRoot,
      {
        css: virtualizerCss,
      },
      _react.createElement(
        _index.Box,
        {
          as: 'div',
          'data-iui-virtualizer': 'root',
          ...rest,
          style: {
            minBlockSize: virtualizer.getTotalSize(),
            ...props.style,
          },
        },
        _react.createElement('slot', null),
      ),
    ),
    _react.createElement(
      _react.Fragment,
      null,
      virtualizer
        .getVirtualItems()
        .map((virtualItem) => virtualItemRenderer(virtualItem)),
    ),
  );
};
const ComboBoxMenu = _react.forwardRef((props, forwardedRef) => {
  let { className, children, style, portal = true, ...rest } = props;
  let { id, enableVirtualization, popover } = (0, _index.useSafeContext)(
    _helpers.ComboBoxStateContext,
  );
  let { menuRef } = (0, _index.useSafeContext)(_helpers.ComboBoxRefsContext);
  let refs = (0, _index.useMergedRefs)(
    popover.refs.setFloating,
    forwardedRef,
    menuRef,
  );
  return (
    popover.open &&
    _react.createElement(
      _index.Portal,
      {
        portal: portal,
      },
      _react.createElement(
        _List.List,
        {
          as: 'div',
          className: (0, _classnames.default)('iui-menu', className),
          id: `${id}-list`,
          role: 'listbox',
          ref: refs,
          ...popover.getFloatingProps({
            style: enableVirtualization
              ? {
                  maxInlineSize: 0,
                  ...style,
                }
              : style,
            ...rest,
          }),
        },
        enableVirtualization
          ? _react.createElement(VirtualizedComboBoxMenu, null, children)
          : children,
      ),
    )
  );
});
if ('development' === process.env.NODE_ENV)
  ComboBoxMenu.displayName = 'ComboBoxMenu';