@wordpress/block-editor/build-module/components/inserter/search-results.js

Generic block editor.

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

/**
 * WordPress dependencies
 */
import { useMemo, useEffect } from '@wordpress/element';
import { __, _n, sprintf } from '@wordpress/i18n';
import { VisuallyHidden } from '@wordpress/components';
import { useDebounce, useAsyncList } from '@wordpress/compose';
import { speak } from '@wordpress/a11y';
import { useSelect } from '@wordpress/data';
/**
 * Internal dependencies
 */

import BlockTypesList from '../block-types-list';
import BlockPatternsList from '../block-patterns-list';
import __unstableInserterMenuExtension from '../inserter-menu-extension';
import InserterPanel from './panel';
import InserterNoResults from './no-results';
import useInsertionPoint from './hooks/use-insertion-point';
import usePatternsState from './hooks/use-patterns-state';
import useBlockTypesState from './hooks/use-block-types-state';
import { searchBlockItems, searchItems } from './search-items';
import InserterListbox from '../inserter-listbox';
import { orderBy } from '../../utils/sorting';
import { orderInserterBlockItems } from '../../utils/order-inserter-block-items';
import { store as blockEditorStore } from '../../store';
const INITIAL_INSERTER_RESULTS = 9;
/**
 * Shared reference to an empty array for cases where it is important to avoid
 * returning a new array reference on every invocation and rerendering the component.
 *
 * @type {Array}
 */

const EMPTY_ARRAY = [];

function InserterSearchResults({
  filterValue,
  onSelect,
  onHover,
  rootClientId,
  clientId,
  isAppender,
  __experimentalInsertionIndex,
  maxBlockPatterns,
  maxBlockTypes,
  showBlockDirectory = false,
  isDraggable = true,
  shouldFocusBlock = true,
  prioritizePatterns,
  selectBlockOnInsert
}) {
  const debouncedSpeak = useDebounce(speak, 500);
  const {
    prioritizedBlocks
  } = useSelect(select => {
    const blockListSettings = select(blockEditorStore).getBlockListSettings(rootClientId);
    return {
      prioritizedBlocks: blockListSettings?.prioritizedInserterBlocks || EMPTY_ARRAY
    };
  }, [rootClientId]);
  const [destinationRootClientId, onInsertBlocks] = useInsertionPoint({
    onSelect,
    rootClientId,
    clientId,
    isAppender,
    insertionIndex: __experimentalInsertionIndex,
    shouldFocusBlock,
    selectBlockOnInsert
  });
  const [blockTypes, blockTypeCategories, blockTypeCollections, onSelectBlockType] = useBlockTypesState(destinationRootClientId, onInsertBlocks);
  const [patterns,, onSelectBlockPattern] = usePatternsState(onInsertBlocks, destinationRootClientId);
  const filteredBlockPatterns = useMemo(() => {
    if (maxBlockPatterns === 0) {
      return [];
    }

    const results = searchItems(patterns, filterValue);
    return maxBlockPatterns !== undefined ? results.slice(0, maxBlockPatterns) : results;
  }, [filterValue, patterns, maxBlockPatterns]);
  let maxBlockTypesToShow = maxBlockTypes;

  if (prioritizePatterns && filteredBlockPatterns.length > 2) {
    maxBlockTypesToShow = 0;
  }

  const filteredBlockTypes = useMemo(() => {
    if (maxBlockTypesToShow === 0) {
      return [];
    }

    let orderedItems = orderBy(blockTypes, 'frecency', 'desc');

    if (!filterValue && prioritizedBlocks.length) {
      orderedItems = orderInserterBlockItems(orderedItems, prioritizedBlocks);
    }

    const results = searchBlockItems(orderedItems, blockTypeCategories, blockTypeCollections, filterValue);
    return maxBlockTypesToShow !== undefined ? results.slice(0, maxBlockTypesToShow) : results;
  }, [filterValue, blockTypes, blockTypeCategories, blockTypeCollections, maxBlockTypesToShow, prioritizedBlocks]); // Announce search results on change.

  useEffect(() => {
    if (!filterValue) {
      return;
    }

    const count = filteredBlockTypes.length + filteredBlockPatterns.length;
    const resultsFoundMessage = sprintf(
    /* translators: %d: number of results. */
    _n('%d result found.', '%d results found.', count), count);
    debouncedSpeak(resultsFoundMessage);
  }, [filterValue, debouncedSpeak, filteredBlockTypes, filteredBlockPatterns]);
  const currentShownBlockTypes = useAsyncList(filteredBlockTypes, {
    step: INITIAL_INSERTER_RESULTS
  });
  const currentShownPatterns = useAsyncList(currentShownBlockTypes.length === filteredBlockTypes.length ? filteredBlockPatterns : EMPTY_ARRAY);
  const hasItems = filteredBlockTypes.length > 0 || filteredBlockPatterns.length > 0;
  const blocksUI = !!filteredBlockTypes.length && createElement(InserterPanel, {
    title: createElement(VisuallyHidden, null, __('Blocks'))
  }, createElement(BlockTypesList, {
    items: currentShownBlockTypes,
    onSelect: onSelectBlockType,
    onHover: onHover,
    label: __('Blocks'),
    isDraggable: isDraggable
  }));
  const patternsUI = !!filteredBlockPatterns.length && createElement(InserterPanel, {
    title: createElement(VisuallyHidden, null, __('Block Patterns'))
  }, createElement("div", {
    className: "block-editor-inserter__quick-inserter-patterns"
  }, createElement(BlockPatternsList, {
    shownPatterns: currentShownPatterns,
    blockPatterns: filteredBlockPatterns,
    onClickPattern: onSelectBlockPattern,
    onHover: onHover,
    isDraggable: isDraggable
  })));
  return createElement(InserterListbox, null, !showBlockDirectory && !hasItems && createElement(InserterNoResults, null), prioritizePatterns ? patternsUI : blocksUI, !!filteredBlockTypes.length && !!filteredBlockPatterns.length && createElement("div", {
    className: "block-editor-inserter__quick-inserter-separator"
  }), prioritizePatterns ? blocksUI : patternsUI, showBlockDirectory && createElement(__unstableInserterMenuExtension.Slot, {
    fillProps: {
      onSelect: onSelectBlockType,
      onHover,
      filterValue,
      hasItems,
      rootClientId: destinationRootClientId
    }
  }, fills => {
    if (fills.length) {
      return fills;
    }

    if (!hasItems) {
      return createElement(InserterNoResults, null);
    }

    return null;
  }));
}

export default InserterSearchResults;
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