elliptical-observe/lib-node/processor.js

Sideways Data Loading for Elliptical

'use strict';

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

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

var _elliptical = require('elliptical');

var _store = require('./store');

var _store2 = _interopRequireDefault(_store);

var _dynamic = require('./dynamic');

var _dynamic2 = _interopRequireDefault(_dynamic);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/** @jsx createElement */

function createProcessor(register, processor) {
  return function process(element) {
    if (element.type.observe) {
      let source = element.type.observe(element);

      if (processor) {
        source = processor(source);
      }
      let oldData = register(source);
      let desc;
      if (element.type.describe) {
        desc = element.type.describe(_lodash2.default.assign({}, element, { data: oldData }));
      }

      function visit(option, e, traverse) {
        const data = register(source);
        if (oldData !== data) {
          oldData = data;
          if (element.type.describe) {
            desc = element.type.describe(_lodash2.default.assign({}, element, { data: data }));
          }
        }
        if (element.type.describe) {
          return traverse(desc, option);
        } else {
          return e.type._oldVisit(option, _lodash2.default.assign({}, e, { data: data }), traverse);
        }
      }

      const type = _lodash2.default.assign({}, element.type, {
        visit: visit,
        _oldVisit: element.type.visit,
        describe: undefined
      });
      return _lodash2.default.assign({}, element, { type: type });
    } else if (element.type === "dynamic") {
      return _lodash2.default.assign({}, element, { type: _dynamic2.default, register: register });
    }
    return element;
  };
}