@wordpress/block-library/build-module/embed/edit.js

Block library for the WordPress editor.

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

/**
 * Internal dependencies
 */
import { createUpgradedEmbedBlock, getClassNames, fallback, getEmbedInfoByProvider, getMergedAttributesWithPreview } from './util';
import EmbedControls from './embed-controls';
import { embedContentIcon } from './icons';
import EmbedLoading from './embed-loading';
import EmbedPlaceholder from './embed-placeholder';
import EmbedPreview from './embed-preview';
/**
 * External dependencies
 */

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

import { __, _x, sprintf } from '@wordpress/i18n';
import { useState, useEffect } from '@wordpress/element';
import { useDispatch, useSelect } from '@wordpress/data';
import { useBlockProps } from '@wordpress/block-editor';
import { store as coreStore } from '@wordpress/core-data';
import { View } from '@wordpress/primitives';

const EmbedEdit = props => {
  const {
    attributes: {
      providerNameSlug,
      previewable,
      responsive,
      url: attributesUrl
    },
    attributes,
    isSelected,
    onReplace,
    setAttributes,
    insertBlocksAfter,
    onFocus
  } = props;
  const defaultEmbedInfo = {
    title: _x('Embed', 'block title'),
    icon: embedContentIcon
  };
  const {
    icon,
    title
  } = getEmbedInfoByProvider(providerNameSlug) || defaultEmbedInfo;
  const [url, setURL] = useState(attributesUrl);
  const [isEditingURL, setIsEditingURL] = useState(false);
  const {
    invalidateResolution
  } = useDispatch(coreStore);
  const {
    preview,
    fetching,
    themeSupportsResponsive,
    cannotEmbed
  } = useSelect(select => {
    var _embedPreview$data;

    const {
      getEmbedPreview,
      isPreviewEmbedFallback,
      isRequestingEmbedPreview,
      getThemeSupports
    } = select(coreStore);

    if (!attributesUrl) {
      return {
        fetching: false,
        cannotEmbed: false
      };
    }

    const embedPreview = getEmbedPreview(attributesUrl);
    const previewIsFallback = isPreviewEmbedFallback(attributesUrl); // The external oEmbed provider does not exist. We got no type info and no html.

    const badEmbedProvider = (embedPreview === null || embedPreview === void 0 ? void 0 : embedPreview.html) === false && (embedPreview === null || embedPreview === void 0 ? void 0 : embedPreview.type) === undefined; // Some WordPress URLs that can't be embedded will cause the API to return
    // a valid JSON response with no HTML and `data.status` set to 404, rather
    // than generating a fallback response as other embeds do.

    const wordpressCantEmbed = (embedPreview === null || embedPreview === void 0 ? void 0 : (_embedPreview$data = embedPreview.data) === null || _embedPreview$data === void 0 ? void 0 : _embedPreview$data.status) === 404;
    const validPreview = !!embedPreview && !badEmbedProvider && !wordpressCantEmbed;
    return {
      preview: validPreview ? embedPreview : undefined,
      fetching: isRequestingEmbedPreview(attributesUrl),
      themeSupportsResponsive: getThemeSupports()['responsive-embeds'],
      cannotEmbed: !validPreview || previewIsFallback
    };
  }, [attributesUrl]);
  /**
   * Returns the attributes derived from the preview, merged with the current attributes.
   *
   * @param {boolean} ignorePreviousClassName Determines if the previous className attribute should be ignored when merging.
   * @return {Object} Merged attributes.
   */

  const getMergedAttributes = function () {
    let ignorePreviousClassName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
    return getMergedAttributesWithPreview(attributes, preview, title, responsive, ignorePreviousClassName);
  };

  const toggleResponsive = () => {
    const {
      allowResponsive,
      className
    } = attributes;
    const {
      html
    } = preview;
    const newAllowResponsive = !allowResponsive;
    setAttributes({
      allowResponsive: newAllowResponsive,
      className: getClassNames(html, className, responsive && newAllowResponsive)
    });
  };

  useEffect(() => {
    if (!(preview !== null && preview !== void 0 && preview.html) || !cannotEmbed || fetching) {
      return;
    } // At this stage, we're not fetching the preview and know it can't be embedded,
    // so try removing any trailing slash, and resubmit.


    const newURL = attributesUrl.replace(/\/$/, '');
    setURL(newURL);
    setIsEditingURL(false);
    setAttributes({
      url: newURL
    });
  }, [preview === null || preview === void 0 ? void 0 : preview.html, attributesUrl]); // Handle incoming preview.

  useEffect(() => {
    if (preview && !isEditingURL) {
      // When obtaining an incoming preview, we set the attributes derived from
      // the preview data. In this case when getting the merged attributes,
      // we ignore the previous classname because it might not match the expected
      // classes by the new preview.
      setAttributes(getMergedAttributes(true));

      if (onReplace) {
        const upgradedBlock = createUpgradedEmbedBlock(props, getMergedAttributes());

        if (upgradedBlock) {
          onReplace(upgradedBlock);
        }
      }
    }
  }, [preview, isEditingURL]);
  const blockProps = useBlockProps();

  if (fetching) {
    return createElement(View, blockProps, createElement(EmbedLoading, null));
  } // translators: %s: type of embed e.g: "YouTube", "Twitter", etc. "Embed" is used when no specific type exists


  const label = sprintf(__('%s URL'), title); // No preview, or we can't embed the current URL, or we've clicked the edit button.

  const showEmbedPlaceholder = !preview || cannotEmbed || isEditingURL;

  if (showEmbedPlaceholder) {
    return createElement(View, blockProps, createElement(EmbedPlaceholder, {
      icon: icon,
      label: label,
      onFocus: onFocus,
      onSubmit: event => {
        if (event) {
          event.preventDefault();
        }

        setIsEditingURL(false);
        setAttributes({
          url
        });
      },
      value: url,
      cannotEmbed: cannotEmbed,
      onChange: event => setURL(event.target.value),
      fallback: () => fallback(url, onReplace),
      tryAgain: () => {
        invalidateResolution('getEmbedPreview', [url]);
      }
    }));
  } // Even though we set attributes that get derived from the preview,
  // we don't access them directly because for the initial render,
  // the `setAttributes` call will not have taken effect. If we're
  // rendering responsive content, setting the responsive classes
  // after the preview has been rendered can result in unwanted
  // clipping or scrollbars. The `getAttributesFromPreview` function
  // that `getMergedAttributes` uses is memoized so that we're not
  // calculating them on every render.


  const {
    caption,
    type,
    allowResponsive,
    className: classFromPreview
  } = getMergedAttributes();
  const className = classnames(classFromPreview, props.className);
  return createElement(Fragment, null, createElement(EmbedControls, {
    showEditButton: preview && !cannotEmbed,
    themeSupportsResponsive: themeSupportsResponsive,
    blockSupportsResponsive: responsive,
    allowResponsive: allowResponsive,
    toggleResponsive: toggleResponsive,
    switchBackToURLInput: () => setIsEditingURL(true)
  }), createElement(View, blockProps, createElement(EmbedPreview, {
    preview: preview,
    previewable: previewable,
    className: className,
    url: url,
    type: type,
    caption: caption,
    onCaptionChange: value => setAttributes({
      caption: value
    }),
    isSelected: isSelected,
    icon: icon,
    label: label,
    insertBlocksAfter: insertBlocksAfter
  })));
};

export default EmbedEdit;
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