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

Block library for the WordPress editor.

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

/**
 * External dependencies
 */
import classnames from 'classnames';
/**
 * WordPress dependencies
 */

import { AlignmentControl, BlockControls, useBlockProps, InspectorControls } from '@wordpress/block-editor';
import { __, _n, sprintf } from '@wordpress/i18n';
import { useEntityProp } from '@wordpress/core-data';
import { PanelBody, ToggleControl } from '@wordpress/components';
import { useState, useEffect } from '@wordpress/element';
import apiFetch from '@wordpress/api-fetch';
import { addQueryArgs } from '@wordpress/url';
/**
 * Internal dependencies
 */

import HeadingLevelDropdown from '../heading/heading-level-dropdown';
export default function Edit(_ref) {
  let {
    attributes: {
      textAlign,
      showPostTitle,
      showCommentsCount,
      level
    },
    setAttributes,
    context: {
      postType,
      postId
    }
  } = _ref;
  const TagName = 'h' + level;
  const [commentsCount, setCommentsCount] = useState();
  const [rawTitle] = useEntityProp('postType', postType, 'title', postId);
  const isSiteEditor = typeof postId === 'undefined';
  const blockProps = useBlockProps({
    className: classnames({
      [`has-text-align-${textAlign}`]: textAlign
    })
  });
  useEffect(() => {
    if (isSiteEditor) {
      setCommentsCount(3);
      return;
    }

    const currentPostId = postId;
    apiFetch({
      path: addQueryArgs('/wp/v2/comments', {
        post: postId,
        _fields: 'id'
      }),
      method: 'HEAD',
      parse: false
    }).then(res => {
      // Stale requests will have the `currentPostId` of an older closure.
      if (currentPostId === postId) {
        setCommentsCount(parseInt(res.headers.get('X-WP-Total')));
      }
    }).catch(() => {
      setCommentsCount(0);
    });
  }, [postId]);
  const blockControls = createElement(BlockControls, {
    group: "block"
  }, createElement(AlignmentControl, {
    value: textAlign,
    onChange: newAlign => setAttributes({
      textAlign: newAlign
    })
  }), createElement(HeadingLevelDropdown, {
    selectedLevel: level,
    onChange: newLevel => setAttributes({
      level: newLevel
    })
  }));
  const inspectorControls = createElement(InspectorControls, null, createElement(PanelBody, {
    title: __('Settings')
  }, createElement(ToggleControl, {
    label: __('Show post title'),
    checked: showPostTitle,
    onChange: value => setAttributes({
      showPostTitle: value
    })
  }), createElement(ToggleControl, {
    label: __('Show comments count'),
    checked: showCommentsCount,
    onChange: value => setAttributes({
      showCommentsCount: value
    })
  })));
  const postTitle = isSiteEditor ? __('“Post Title”') : `"${rawTitle}"`;
  let placeholder;

  if (showCommentsCount && commentsCount !== undefined) {
    if (showPostTitle) {
      if (commentsCount === 1) {
        /* translators: %s: Post title. */
        placeholder = sprintf(__('One response to %s'), postTitle);
      } else {
        placeholder = sprintf(
        /* translators: 1: Number of comments, 2: Post title. */
        _n('%1$s response to %2$s', '%1$s responses to %2$s', commentsCount), commentsCount, postTitle);
      }
    } else if (commentsCount === 1) {
      placeholder = __('One response');
    } else {
      placeholder = sprintf(
      /* translators: %s: Number of comments. */
      _n('%s response', '%s responses', commentsCount), commentsCount);
    }
  } else if (showPostTitle) {
    if (commentsCount === 1) {
      /* translators: %s: Post title. */
      placeholder = sprintf(__('Response to %s'), postTitle);
    } else {
      /* translators: %s: Post title. */
      placeholder = sprintf(__('Responses to %s'), postTitle);
    }
  } else if (commentsCount === 1) {
    placeholder = __('Response');
  } else {
    placeholder = __('Responses');
  }

  return createElement(Fragment, null, blockControls, inspectorControls, createElement(TagName, blockProps, placeholder));
}
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