@wordpress/blocks/build-module/api/parser/fix-aria-label.js

Block API for WordPress.

/**
 * Internal dependencies
 */
import { hasBlockSupport } from '../registration';
import { parseWithAttributeSchema } from './get-block-attributes';
const ARIA_LABEL_ATTR_SCHEMA = {
  type: 'string',
  source: 'attribute',
  selector: '[data-aria-label] > *',
  attribute: 'aria-label'
};

/**
 * Given an HTML string, returns the aria-label attribute assigned to
 * the root element in the markup.
 *
 * @param {string} innerHTML Markup string from which to extract the aria-label.
 *
 * @return {string} The aria-label assigned to the root element.
 */
export function getHTMLRootElementAriaLabel(innerHTML) {
  const parsed = parseWithAttributeSchema(`<div data-aria-label>${innerHTML}</div>`, ARIA_LABEL_ATTR_SCHEMA);
  return parsed;
}

/**
 * Given a parsed set of block attributes, if the block supports ariaLabel
 * and an aria-label attribute is found, the aria-label attribute is assigned
 * to the block attributes.
 *
 * @param {Object} blockAttributes Original block attributes.
 * @param {Object} blockType       Block type settings.
 * @param {string} innerHTML       Original block markup.
 *
 * @return {Object} Filtered block attributes.
 */
export function fixAriaLabel(blockAttributes, blockType, innerHTML) {
  if (!hasBlockSupport(blockType, 'ariaLabel', false)) {
    return blockAttributes;
  }
  const modifiedBlockAttributes = {
    ...blockAttributes
  };
  const ariaLabel = getHTMLRootElementAriaLabel(innerHTML);
  if (ariaLabel) {
    modifiedBlockAttributes.ariaLabel = ariaLabel;
  }
  return modifiedBlockAttributes;
}
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