@base-ui/react/esm/combobox/positioner/ComboboxPositioner.js

Base UI is a library of headless ('unstyled') React components and low-level hooks. You gain complete control over your app's CSS and accessibility features.

'use client';

import * as React from 'react';
import { useStore } from '@base-ui/utils/store';
import { useIsoLayoutEffect } from '@base-ui/utils/useIsoLayoutEffect';
import { useStableCallback } from '@base-ui/utils/useStableCallback';
import { inertValue } from '@base-ui/utils/inertValue';
import { useComboboxFloatingContext, useComboboxRootContext, useComboboxDerivedItemsContext } from "../root/ComboboxRootContext.js";
import { ComboboxPositionerContext } from "./ComboboxPositionerContext.js";
import { useAnchorPositioning } from "../../utils/useAnchorPositioning.js";
import { useComboboxPortalContext } from "../portal/ComboboxPortalContext.js";
import { DROPDOWN_COLLISION_AVOIDANCE } from "../../internals/constants.js";
import { selectors } from "../store.js";
import { InternalBackdrop } from "../../utils/InternalBackdrop.js";
import { usePositioner } from "../../utils/usePositioner.js";
import { useAnchoredPopupScrollLock } from "../../utils/useAnchoredPopupScrollLock.js";

/**
 * Positions the popup against the trigger.
 * Renders a `<div>` element.
 *
 * Documentation: [Base UI Combobox](https://base-ui.com/react/components/combobox)
 */
import { jsx as _jsx, jsxs as _jsxs } from "react/jsx-runtime";
export const ComboboxPositioner = /*#__PURE__*/React.forwardRef(function ComboboxPositioner(componentProps, forwardedRef) {
  const {
    render,
    className,
    anchor,
    positionMethod = 'absolute',
    side = 'bottom',
    align = 'center',
    sideOffset = 0,
    alignOffset = 0,
    collisionBoundary = 'clipping-ancestors',
    collisionPadding = 5,
    arrowPadding = 5,
    sticky = false,
    disableAnchorTracking = false,
    collisionAvoidance = DROPDOWN_COLLISION_AVOIDANCE,
    style: styleProp,
    ...elementProps
  } = componentProps;
  const store = useComboboxRootContext();
  const {
    filteredItems
  } = useComboboxDerivedItemsContext();
  const floatingRootContext = useComboboxFloatingContext();
  const keepMounted = useComboboxPortalContext();
  const modal = useStore(store, selectors.modal);
  const open = useStore(store, selectors.open);
  const mounted = useStore(store, selectors.mounted);
  const openMethod = useStore(store, selectors.openMethod);
  const positionerElement = useStore(store, selectors.positionerElement);
  const triggerElement = useStore(store, selectors.triggerElement);
  const inputElement = useStore(store, selectors.inputElement);
  const inputGroupElement = useStore(store, selectors.inputGroupElement);
  const inputInsidePopup = useStore(store, selectors.inputInsidePopup);
  const transitionStatus = useStore(store, selectors.transitionStatus);
  const empty = filteredItems.length === 0;
  const resolvedAnchor = anchor ?? (inputInsidePopup ? triggerElement : inputGroupElement ?? inputElement);
  const positioning = useAnchorPositioning({
    anchor: resolvedAnchor,
    floatingRootContext,
    positionMethod,
    mounted,
    side,
    sideOffset,
    align,
    alignOffset,
    arrowPadding,
    collisionBoundary,
    collisionPadding,
    sticky,
    disableAnchorTracking,
    keepMounted,
    collisionAvoidance,
    lazyFlip: true
  });
  useAnchoredPopupScrollLock(open && modal, openMethod === 'touch', positionerElement, triggerElement);
  const state = {
    open,
    side: positioning.side,
    align: positioning.align,
    anchorHidden: positioning.anchorHidden,
    empty
  };
  useIsoLayoutEffect(() => {
    store.set('popupSide', positioning.side);
  }, [store, positioning.side]);
  const setPositionerElement = useStableCallback(element => {
    store.set('positionerElement', element);
  });
  const element = usePositioner(componentProps, state, {
    styles: positioning.positionerStyles,
    transitionStatus,
    props: elementProps,
    refs: [forwardedRef, setPositionerElement],
    hidden: !mounted,
    inert: !open
  });
  return /*#__PURE__*/_jsxs(ComboboxPositionerContext.Provider, {
    value: positioning,
    children: [mounted && modal && /*#__PURE__*/_jsx(InternalBackdrop, {
      inert: inertValue(!open),
      cutout: inputGroupElement ?? inputElement ?? triggerElement
    }), element]
  });
});
if (process.env.NODE_ENV !== "production") ComboboxPositioner.displayName = "ComboboxPositioner";