@atlaskit/editor-plugin-block-menu/dist/cjs/editor-commands/transform-node-utils/steps/mergeNeighbourListsStep.js

BlockMenu plugin for @atlaskit/editor-core

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.mergeNeighbourListsStep = void 0;
var _nodeChecks = require("../nodeChecks");
function _createForOfIteratorHelper(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (!t) { if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var _n = 0, F = function F() {}; return { s: F, n: function n() { return _n >= r.length ? { done: !0 } : { done: !1, value: r[_n++] }; }, e: function e(r) { throw r; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var o, a = !0, u = !1; return { s: function s() { t = t.call(r); }, n: function n() { var r = t.next(); return a = r.done, r; }, e: function e(r) { u = !0, o = r; }, f: function f() { try { a || null == t.return || t.return(); } finally { if (u) throw o; } } }; }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
/**
 * Merges consecutive lists of the same type into a single list.
 * This step is useful after multiToListStep which may create multiple separate lists
 * that should be combined.
 *
 * Handles both nestable lists (bulletList, orderedList, taskList) and
 * non-nestable lists (decisionList).
 *
 * @example
 * Input:
 * - bulletList
 *   - listItem "1"
 * - bulletList
 *   - listItem "2"
 * - panel (non-list node)
 * - bulletList
 *   - listItem "3"
 *
 * Output:
 * - bulletList
 *   - listItem "1"
 *   - listItem "2"
 * - panel (non-list node)
 * - bulletList
 *   - listItem "3"
 *
 * @param nodes - The nodes to process
 * @param context - The transformation context
 * @returns The merged nodes
 */
var mergeNeighbourListsStep = exports.mergeNeighbourListsStep = function mergeNeighbourListsStep(nodes, context) {
  if (nodes.length === 0) {
    return nodes;
  }
  var schema = context.schema;
  var resultNodes = [];
  var currentList = null;

  // Check if a node is any type of list (including decisionList)
  var isList = function isList(node) {
    return (0, _nodeChecks.isListWithIndentation)(node.type.name, schema) || node.type.name === 'decisionList';
  };
  var _iterator = _createForOfIteratorHelper(nodes),
    _step;
  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var node = _step.value;
      // Check if this node is any type of list
      if (isList(node)) {
        if (currentList && currentList.type === node.type) {
          // Merge with the current list by combining their children
          var mergedContent = currentList.content.append(node.content);
          currentList = currentList.type.create(currentList.attrs, mergedContent);
        } else {
          // Start a new list or switch to a different list type
          if (currentList) {
            resultNodes.push(currentList);
          }
          currentList = node;
        }
      } else {
        // Non-list node - push any accumulated list and then this node
        if (currentList) {
          resultNodes.push(currentList);
          currentList = null;
        }
        resultNodes.push(node);
      }
    }

    // Don't forget the last list if we ended with one
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }
  if (currentList) {
    resultNodes.push(currentList);
  }
  return resultNodes;
};