@wordpress/block-library/build-module/calendar/edit.js

Block library for the WordPress editor.

import { createElement } from "@wordpress/element";

/**
 * External dependencies
 */
import memoize from 'memize';
/**
 * WordPress dependencies
 */

import { calendar as icon } from '@wordpress/icons';
import { Disabled, Placeholder, Spinner } from '@wordpress/components';
import { useSelect } from '@wordpress/data';
import ServerSideRender from '@wordpress/server-side-render';
import { useBlockProps } from '@wordpress/block-editor';
import { store as coreStore } from '@wordpress/core-data';
import { __ } from '@wordpress/i18n';
/**
 * Returns the year and month of a specified date.
 *
 * @see `WP_REST_Posts_Controller::prepare_date_response()`.
 *
 * @param {string} date Date in `ISO8601/RFC3339` format.
 * @return {Object} Year and date of the specified date.
 */

const getYearMonth = memoize(date => {
  if (!date) {
    return {};
  }

  const dateObj = new Date(date);
  return {
    year: dateObj.getFullYear(),
    month: dateObj.getMonth() + 1
  };
});
export default function CalendarEdit(_ref) {
  let {
    attributes
  } = _ref;
  const blockProps = useBlockProps();
  const {
    date,
    hasPosts,
    hasPostsResolved
  } = useSelect(select => {
    const {
      getEntityRecords,
      hasFinishedResolution
    } = select(coreStore);
    const singlePublishedPostQuery = {
      status: 'publish',
      per_page: 1
    };
    const posts = getEntityRecords('postType', 'post', singlePublishedPostQuery);
    const postsResolved = hasFinishedResolution('getEntityRecords', ['postType', 'post', singlePublishedPostQuery]);

    let _date; // FIXME: @wordpress/block-library should not depend on @wordpress/editor.
    // Blocks can be loaded into a *non-post* block editor.
    // eslint-disable-next-line @wordpress/data-no-store-string-literals


    const editorSelectors = select('core/editor');

    if (editorSelectors) {
      const postType = editorSelectors.getEditedPostAttribute('type'); // Dates are used to overwrite year and month used on the calendar.
      // This overwrite should only happen for 'post' post types.
      // For other post types the calendar always displays the current month.

      if (postType === 'post') {
        _date = editorSelectors.getEditedPostAttribute('date');
      }
    }

    return {
      date: _date,
      hasPostsResolved: postsResolved,
      hasPosts: postsResolved && (posts === null || posts === void 0 ? void 0 : posts.length) === 1
    };
  }, []);

  if (!hasPosts) {
    return createElement("div", blockProps, createElement(Placeholder, {
      icon: icon,
      label: __('Calendar')
    }, !hasPostsResolved ? createElement(Spinner, null) : __('No published posts found.')));
  }

  return createElement("div", blockProps, createElement(Disabled, null, createElement(ServerSideRender, {
    block: "core/calendar",
    attributes: { ...attributes,
      ...getYearMonth(date)
    }
  })));
}
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