@atlaskit/popup/dist/es2019/compositional/popup-trigger.js

A popup displays brief content in an overlay.

import React, { useCallback, useContext } from 'react';
import { fg } from '@atlaskit/platform-feature-flags/fg';
import { Reference } from '@atlaskit/popper/reference';
import { useGetMemoizedMergedTriggerRefNew } from '../use-get-memoized-merged-trigger-ref-new';
import { IdContext } from './id-context';
import { IsOpenContext } from './is-open-context';
import { RoleContext } from './role-context';
import { SetTriggerRefContext } from './set-trigger-ref-context';
import { TriggerRefObjectContext } from './trigger-ref-object-context';
import { useEnsureIsInsidePopup } from './use-ensure-is-inside-popup';
/**
 * __Popup trigger__
 *
 * Popup trigger is the component that renders the trigger for the popup.
 *
 * It must be a child of the Popup component.
 */
export const PopupTrigger = ({
  children
}) => {
  useEnsureIsInsidePopup();
  const id = useContext(IdContext);
  const setTriggerRef = useContext(SetTriggerRefContext);
  const triggerRefObject = useContext(TriggerRefObjectContext);
  const isOpen = useContext(IsOpenContext);
  const getMergedTriggerRef = useGetMemoizedMergedTriggerRefNew();
  const role = useContext(RoleContext);

  // Stable ref callback — avoids creating a new function instance on every render,
  // which would cause React to detach and reattach the ref unnecessarily.
  // triggerRefObject is a MutableRefObject (from useRef) so its identity never changes,
  // meaning this callback is effectively created once per mount.
  const triggerRef = useCallback(node => {
    triggerRefObject.current = node;
  }, [triggerRefObject]);
  const ariaHasPopup = role === 'dialog' ? 'dialog' : true;

  // When the top-layer flag is on, bypass Popper's <Reference> entirely.
  // We only need to set triggerRefObject.current — no Popper ref merging needed.
  if (fg('platform-dst-top-layer')) {
    return /*#__PURE__*/React.createElement(React.Fragment, null, children({
      ref: triggerRef,
      'aria-controls': id,
      'aria-expanded': isOpen,
      'aria-haspopup': ariaHasPopup
    }));
  }
  return /*#__PURE__*/React.createElement(Reference, null, ({
    ref
  }) => children({
    ref: getMergedTriggerRef(ref, setTriggerRef),
    'aria-controls': id,
    'aria-expanded': isOpen,
    'aria-haspopup': ariaHasPopup
  }));
};