@wordpress/block-library/build-module/navigation/edit/use-generate-default-navigation-title.js

Block library for the WordPress editor.

/**
 * WordPress dependencies
 */
import { Disabled } from '@wordpress/components';
import { store as coreStore } from '@wordpress/core-data';
import { useRegistry } from '@wordpress/data';
import { useContext, useCallback } from '@wordpress/element';
import { __, sprintf } from '@wordpress/i18n';
/**
 * Internal dependencies
 */

import useTemplatePartAreaLabel from '../use-template-part-area-label';
const DRAFT_MENU_PARAMS = ['postType', 'wp_navigation', {
  status: 'draft',
  per_page: -1
}];
const PUBLISHED_MENU_PARAMS = ['postType', 'wp_navigation', {
  per_page: -1,
  status: 'publish'
}];
export default function useGenerateDefaultNavigationTitle(clientId) {
  // The block will be disabled in a block preview, use this as a way of
  // avoiding the side-effects of this component for block previews.
  const isDisabled = useContext(Disabled.Context); // Because we can't conditionally call hooks, pass an undefined client id
  // arg to bypass the expensive `useTemplateArea` code. The hook will return
  // early.

  const area = useTemplatePartAreaLabel(isDisabled ? undefined : clientId);
  const registry = useRegistry();
  return useCallback(async () => {
    // Ensure other navigation menus have loaded so an
    // accurate name can be created.
    if (isDisabled) {
      return '';
    }

    const {
      getEntityRecords
    } = registry.resolveSelect(coreStore);
    const [draftNavigationMenus, navigationMenus] = await Promise.all([getEntityRecords(...DRAFT_MENU_PARAMS), getEntityRecords(...PUBLISHED_MENU_PARAMS)]);
    const title = area ? sprintf( // translators: %s: the name of a menu (e.g. Header navigation).
    __('%s navigation'), area) : // translators: 'navigation' as in website navigation.
    __('Navigation'); // Determine how many menus start with the automatic title.

    const matchingMenuTitleCount = [...draftNavigationMenus, ...navigationMenus].reduce((count, menu) => {
      var _menu$title, _menu$title$raw;

      return menu !== null && menu !== void 0 && (_menu$title = menu.title) !== null && _menu$title !== void 0 && (_menu$title$raw = _menu$title.raw) !== null && _menu$title$raw !== void 0 && _menu$title$raw.startsWith(title) ? count + 1 : count;
    }, 0); // Append a number to the end of the title if a menu with
    // the same name exists.

    const titleWithCount = matchingMenuTitleCount > 0 ? `${title} ${matchingMenuTitleCount + 1}` : title;
    return titleWithCount || '';
  }, [isDisabled, area]);
}
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