@wordpress/editor/build-module/components/table-of-contents/index.js

Enhanced block editor for WordPress posts.

import _extends from "@babel/runtime/helpers/esm/extends";
import { createElement } from "@wordpress/element";

/**
 * WordPress dependencies
 */
import { __ } from '@wordpress/i18n';
import { Dropdown, Button } from '@wordpress/components';
import { useSelect } from '@wordpress/data';
import { info } from '@wordpress/icons';
import { forwardRef } from '@wordpress/element';
import { store as blockEditorStore } from '@wordpress/block-editor';
/**
 * Internal dependencies
 */

import TableOfContentsPanel from './panel';

function TableOfContents({
  hasOutlineItemsDisabled,
  repositionDropdown,
  ...props
}, ref) {
  const hasBlocks = useSelect(select => !!select(blockEditorStore).getBlockCount(), []);
  return createElement(Dropdown, {
    position: repositionDropdown ? 'middle right right' : 'bottom',
    className: "table-of-contents",
    contentClassName: "table-of-contents__popover",
    renderToggle: ({
      isOpen,
      onToggle
    }) => createElement(Button, _extends({}, props, {
      ref: ref,
      onClick: hasBlocks ? onToggle : undefined,
      icon: info,
      "aria-expanded": isOpen,
      "aria-haspopup": "true"
      /* translators: button label text should, if possible, be under 16 characters. */
      ,
      label: __('Details'),
      tooltipPosition: "bottom",
      "aria-disabled": !hasBlocks
    })),
    renderContent: ({
      onClose
    }) => createElement(TableOfContentsPanel, {
      onRequestClose: onClose,
      hasOutlineItemsDisabled: hasOutlineItemsDisabled
    })
  });
}

export default forwardRef(TableOfContents);
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