@wordpress/block-library/build-module/comments-pagination/edit.js

Block library for the WordPress editor.

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

/**
 * WordPress dependencies
 */
import { __ } from '@wordpress/i18n';
import { InspectorControls, useBlockProps, useInnerBlocksProps, store as blockEditorStore, Warning } from '@wordpress/block-editor';
import { useSelect } from '@wordpress/data';
import { getBlockSupport } from '@wordpress/blocks';
import { PanelBody } from '@wordpress/components';
/**
 * Internal dependencies
 */

import { CommentsPaginationArrowControls } from './comments-pagination-arrow-controls';
const TEMPLATE = [['core/comments-pagination-previous'], ['core/comments-pagination-numbers'], ['core/comments-pagination-next']];
const ALLOWED_BLOCKS = ['core/comments-pagination-previous', 'core/comments-pagination-numbers', 'core/comments-pagination-next'];

const getDefaultBlockLayout = blockTypeOrName => {
  const layoutBlockSupportConfig = getBlockSupport(blockTypeOrName, '__experimentalLayout');
  return layoutBlockSupportConfig === null || layoutBlockSupportConfig === void 0 ? void 0 : layoutBlockSupportConfig.default;
};

export default function QueryPaginationEdit(_ref) {
  let {
    attributes: {
      paginationArrow,
      layout
    },
    setAttributes,
    clientId,
    name
  } = _ref;
  const usedLayout = layout || getDefaultBlockLayout(name);
  const hasNextPreviousBlocks = useSelect(select => {
    const {
      getBlocks
    } = select(blockEditorStore);
    const innerBlocks = getBlocks(clientId);
    /**
     * Show the `paginationArrow` control only if a
     * Comments Pagination Next or Comments Pagination Previous
     * block exists.
     */

    return innerBlocks === null || innerBlocks === void 0 ? void 0 : innerBlocks.find(innerBlock => {
      return ['core/comments-pagination-previous', 'core/comments-pagination-next'].includes(innerBlock.name);
    });
  }, []);
  const blockProps = useBlockProps();
  const innerBlocksProps = useInnerBlocksProps(blockProps, {
    template: TEMPLATE,
    allowedBlocks: ALLOWED_BLOCKS,
    __experimentalLayout: usedLayout
  }); // Get the Discussion settings

  const pageComments = useSelect(select => {
    const {
      getSettings
    } = select(blockEditorStore);
    const {
      __experimentalDiscussionSettings
    } = getSettings();
    return __experimentalDiscussionSettings === null || __experimentalDiscussionSettings === void 0 ? void 0 : __experimentalDiscussionSettings.pageComments;
  }, []); // If paging comments is not enabled in the Discussion Settings then hide the pagination
  // controls. We don't want to remove them from the template so that when the user enables
  // paging comments, the controls will be visible.

  if (!pageComments) {
    return createElement(Warning, null, __('Comments Pagination block: paging comments is disabled in the Discussion Settings'));
  }

  return createElement(Fragment, null, hasNextPreviousBlocks && createElement(InspectorControls, null, createElement(PanelBody, {
    title: __('Settings')
  }, createElement(CommentsPaginationArrowControls, {
    value: paginationArrow,
    onChange: value => {
      setAttributes({
        paginationArrow: value
      });
    }
  }))), createElement("div", innerBlocksProps));
}
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