@wordpress/block-library/build/list/utils.js

Block library for the WordPress editor.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createListBlockFromDOMElement = createListBlockFromDOMElement;
exports.migrateToListV2 = migrateToListV2;

var _blocks = require("@wordpress/blocks");

/**
 * WordPress dependencies
 */
function createListBlockFromDOMElement(listElement) {
  var _listElement$getAttri;

  const listAttributes = {
    ordered: 'OL' === listElement.tagName,
    anchor: listElement.id === '' ? undefined : listElement.id,
    start: listElement.getAttribute('start') ? parseInt(listElement.getAttribute('start'), 10) : undefined,
    reversed: listElement.hasAttribute('reversed') ? true : undefined,
    type: (_listElement$getAttri = listElement.getAttribute('type')) !== null && _listElement$getAttri !== void 0 ? _listElement$getAttri : undefined
  };
  const innerBlocks = Array.from(listElement.children).map(listItem => {
    const children = Array.from(listItem.childNodes).filter(node => node.nodeType !== node.TEXT_NODE || node.textContent.trim().length !== 0);
    children.reverse();
    const [nestedList, ...nodes] = children;
    const hasNestedList = (nestedList === null || nestedList === void 0 ? void 0 : nestedList.tagName) === 'UL' || (nestedList === null || nestedList === void 0 ? void 0 : nestedList.tagName) === 'OL';

    if (!hasNestedList) {
      return (0, _blocks.createBlock)('core/list-item', {
        content: listItem.innerHTML
      });
    }

    const htmlNodes = nodes.map(node => {
      if (node.nodeType === node.TEXT_NODE) {
        return node.textContent;
      }

      return node.outerHTML;
    });
    htmlNodes.reverse();
    const childAttributes = {
      content: htmlNodes.join('').trim()
    };
    const childInnerBlocks = [createListBlockFromDOMElement(nestedList)];
    return (0, _blocks.createBlock)('core/list-item', childAttributes, childInnerBlocks);
  });
  return (0, _blocks.createBlock)('core/list', listAttributes, innerBlocks);
}

function migrateToListV2(attributes) {
  const {
    values,
    start,
    reversed,
    ordered,
    type
  } = attributes;
  const list = document.createElement(ordered ? 'ol' : 'ul');
  list.innerHTML = values;

  if (start) {
    list.setAttribute('start', start);
  }

  if (reversed) {
    list.setAttribute('reversed', true);
  }

  if (type) {
    list.setAttribute('type', type);
  }

  const listBlock = createListBlockFromDOMElement(list);
  const {
    values: omittedValues,
    ...restAttributes
  } = attributes;
  return [{ ...restAttributes,
    ...listBlock.attributes
  }, listBlock.innerBlocks];
}
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