@wordpress/blocks/build/api/raw-handling/ms-list-converter.js

Block API for WordPress.

"use strict";

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

/**
 * Browser dependencies
 */
const {
  parseInt
} = window;

function isList(node) {
  return node.nodeName === 'OL' || node.nodeName === 'UL';
}

function msListConverter(node, doc) {
  if (node.nodeName !== 'P') {
    return;
  }

  const style = node.getAttribute('style');

  if (!style) {
    return;
  } // Quick check.


  if (style.indexOf('mso-list') === -1) {
    return;
  }

  const matches = /mso-list\s*:[^;]+level([0-9]+)/i.exec(style);

  if (!matches) {
    return;
  }

  let level = parseInt(matches[1], 10) - 1 || 0;
  const prevNode = node.previousElementSibling; // Add new list if no previous.

  if (!prevNode || !isList(prevNode)) {
    // See https://html.spec.whatwg.org/multipage/grouping-content.html#attr-ol-type.
    const type = node.textContent.trim().slice(0, 1);
    const isNumeric = /[1iIaA]/.test(type);
    const newListNode = doc.createElement(isNumeric ? 'ol' : 'ul');

    if (isNumeric) {
      newListNode.setAttribute('type', type);
    }

    node.parentNode.insertBefore(newListNode, node);
  }

  const listNode = node.previousElementSibling;
  const listType = listNode.nodeName;
  const listItem = doc.createElement('li');
  let receivingNode = listNode; // Remove the first span with list info.

  node.removeChild(node.firstElementChild); // Add content.

  while (node.firstChild) {
    listItem.appendChild(node.firstChild);
  } // Change pointer depending on indentation level.


  while (level--) {
    receivingNode = receivingNode.lastElementChild || receivingNode; // If it's a list, move pointer to the last item.

    if (isList(receivingNode)) {
      receivingNode = receivingNode.lastElementChild || receivingNode;
    }
  } // Make sure we append to a list.


  if (!isList(receivingNode)) {
    receivingNode = receivingNode.appendChild(doc.createElement(listType));
  } // Append the list item to the list.


  receivingNode.appendChild(listItem); // Remove the wrapper paragraph.

  node.parentNode.removeChild(node);
}
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