iui/src/Data/Form.js

import IUIElement from "../Core/IUIElement.js";
import { IUI } from "../Core/IUI.js";
import Modifiable from "./Modifiable.js";

export default IUI.module(
  class Form extends IUIElement {
    constructor() {
      super();
    }

    static _copy(val) {
      if (typeof val === "object" && val !== null) {
        let rt = {};
        for (var i in val)
          if (val[i] instanceof Array)
            // copy array
            rt[i] = [...val[i]];
          else rt[i] = val[i];

        return rt;
      } else return val;
    }

    async create() {
      //var elements = this.querySelectorAll("*[field]");
      //for (var i = 0; i < elements.length; i++)
      //    this.form[elements[i].getAttribute("field")] = elements[i];
    }

    async setData(value) {
      this.original = value;
      //var copy = {};
      //Object.assign(copy, value);
      super.setData(new Modifiable(this.original)); //  Form._copy(this.original));
      //super.setData({ ...this.original });
    }

    async reset() {
      //super.setData({ ...this.original });
      super.setData(new Modifiable(this.original)); //Form._copy(this.original));
      return this;
    }

    get diff() {
      return this._data._diff;

      if (this.original == null) return this._data;

      var rt = {};
      for (var i in this._data)
        if (this._data[i] != this.original[i]) {
          if (
            this._data[i] instanceof Array &&
            Form._areEqual(this._data[i], this.original[i])
          )
            continue;
          else rt[i] = this._data[i];
        }

      return rt;
    }
  }
);