@wordpress/block-editor/build-module/components/link-control/search-input.js

Generic block editor.

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

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

import { useInstanceId } from '@wordpress/compose';
import { forwardRef, useState } from '@wordpress/element';
import { __ } from '@wordpress/i18n';
/**
 * Internal dependencies
 */

import { URLInput } from '../';
import LinkControlSearchResults from './search-results';
import { CREATE_TYPE } from './constants';
import useSearchHandler from './use-search-handler'; // Must be a function as otherwise URLInput will default
// to the fetchLinkSuggestions passed in block editor settings
// which will cause an unintended http request.

const noopSearchHandler = () => Promise.resolve([]);

const noop = () => {};

const LinkControlSearchInput = forwardRef(({
  value,
  children,
  currentLink = {},
  className = null,
  placeholder = null,
  withCreateSuggestion = false,
  onCreateSuggestion = noop,
  onChange = noop,
  onSelect = noop,
  showSuggestions = true,
  renderSuggestions = props => createElement(LinkControlSearchResults, props),
  fetchSuggestions = null,
  allowDirectEntry = true,
  showInitialSuggestions = false,
  suggestionsQuery = {},
  withURLSuggestion = true,
  createSuggestionButtonText,
  useLabel = false
}, ref) => {
  const genericSearchHandler = useSearchHandler(suggestionsQuery, allowDirectEntry, withCreateSuggestion, withURLSuggestion);
  const searchHandler = showSuggestions ? fetchSuggestions || genericSearchHandler : noopSearchHandler;
  const instanceId = useInstanceId(LinkControlSearchInput);
  const [focusedSuggestion, setFocusedSuggestion] = useState();
  /**
   * Handles the user moving between different suggestions. Does not handle
   * choosing an individual item.
   *
   * @param {string} selection  the url of the selected suggestion.
   * @param {Object} suggestion the suggestion object.
   */

  const onInputChange = (selection, suggestion) => {
    onChange(selection);
    setFocusedSuggestion(suggestion);
  };

  const handleRenderSuggestions = props => renderSuggestions({ ...props,
    instanceId,
    withCreateSuggestion,
    createSuggestionButtonText,
    suggestionsQuery,
    handleSuggestionClick: suggestion => {
      if (props.handleSuggestionClick) {
        props.handleSuggestionClick(suggestion);
      }

      onSuggestionSelected(suggestion);
    }
  });

  const onSuggestionSelected = async selectedSuggestion => {
    let suggestion = selectedSuggestion;

    if (CREATE_TYPE === selectedSuggestion.type) {
      // Create a new page and call onSelect with the output from the onCreateSuggestion callback.
      try {
        suggestion = await onCreateSuggestion(selectedSuggestion.title);

        if (suggestion?.url) {
          onSelect(suggestion);
        }
      } catch (e) {}

      return;
    }

    if (allowDirectEntry || suggestion && Object.keys(suggestion).length >= 1) {
      const {
        id,
        url,
        ...restLinkProps
      } = currentLink !== null && currentLink !== void 0 ? currentLink : {};
      onSelect( // Some direct entries don't have types or IDs, and we still need to clear the previous ones.
      { ...restLinkProps,
        ...suggestion
      }, suggestion);
    }
  };

  const inputClasses = classnames(className, {
    'has-no-label': !useLabel
  });
  return createElement("div", {
    className: "block-editor-link-control__search-input-container"
  }, createElement(URLInput, {
    __nextHasNoMarginBottom: true,
    label: useLabel ? 'URL' : undefined,
    className: inputClasses,
    value: value,
    onChange: onInputChange,
    placeholder: placeholder !== null && placeholder !== void 0 ? placeholder : __('Search or type url'),
    __experimentalRenderSuggestions: showSuggestions ? handleRenderSuggestions : null,
    __experimentalFetchLinkSuggestions: searchHandler,
    __experimentalHandleURLSuggestions: true,
    __experimentalShowInitialSuggestions: showInitialSuggestions,
    onSubmit: (suggestion, event) => {
      const hasSuggestion = suggestion || focusedSuggestion; // If there is no suggestion and the value (ie: any manually entered URL) is empty
      // then don't allow submission otherwise we get empty links.

      if (!hasSuggestion && !value?.trim()?.length) {
        event.preventDefault();
      } else {
        onSuggestionSelected(hasSuggestion || {
          url: value
        });
      }
    },
    ref: ref
  }), children);
});
export default LinkControlSearchInput;
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