handsontable/editors/multiSelectEditor/controllers/selectedItemsController.js

Handsontable is a JavaScript Data Grid available for React, Angular and Vue.

"use strict";

exports.__esModule = true;
var _object = require("../../../helpers/object");
var _utils = require("../utils/utils");
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
/**
 * Controller for managing the selected items.
 *
 * @private
 * @class SelectedItemsController
 */
class SelectedItemsController {
  /**
   * Creates a new SelectedItemsController.
   *
   * @param {Array<*>|undefined} selectedItems Array of selected items.
   */
  constructor(selectedItems) {
    var _this$selectedItems;
    /**
     * Set of selected items.
     *
     * @private
     * @type {Set<*>}
     */
    _defineProperty(this, "selectedItems", (_this$selectedItems = this.selectedItems) !== null && _this$selectedItems !== void 0 ? _this$selectedItems : new Set());
    /**
     * Maximum number of selections.
     *
     * @private
     * @type {number}
     */
    _defineProperty(this, "maxSelectionsCount", Infinity);
    if (Array.isArray(selectedItems)) {
      this.selectedItems = new Set(selectedItems);
    } else {
      this.selectedItems = new Set();
    }
  }

  /**
   * Sets the maximum number of selections.
   *
   * @param {number} maxSelectionsCount Maximum number of selections.
   */
  setMaxSelectionCount(maxSelectionsCount) {
    this.maxSelectionsCount = maxSelectionsCount;
  }

  /**
   * Adds selected values (single or array) to the set.
   *
   * @param {string|object|Array<string|object>} items Items to add.
   */
  add(items) {
    if (this.selectedItems.size >= this.maxSelectionsCount) {
      return;
    }
    if (Array.isArray(items)) {
      items.forEach(item => this.selectedItems.add(item));
    } else {
      this.selectedItems.add(items);
    }
  }

  /**
   * Removes a selected value from the set.
   *
   * @param {string|object} item Item to remove.
   * @returns {boolean} True if the item was removed, false otherwise.
   */
  remove(item) {
    if ((0, _object.isKeyValueObject)(item)) {
      const itemsArray = Array.from(this.selectedItems);
      const foundItem = itemsArray.find(selectedItem => (0, _object.isObjectEqual)(selectedItem, item));
      if (foundItem !== undefined) {
        this.selectedItems.delete(foundItem);
        return true;
      }
    } else {
      return this.selectedItems.delete(item);
    }
    return false;
  }

  /**
   * Checks if a value is in the set.
   *
   * @param {*} value Value to check.
   * @returns {boolean}
   */
  has(value) {
    return (0, _utils.includesValue)(this.getItemsArray(), value);
  }

  /**
   * Clears the set.
   */
  clear() {
    this.selectedItems.clear();
  }

  /**
   * Gets the number of selected items.
   *
   * @returns {number}
   */
  getSize() {
    return this.selectedItems.size;
  }

  /**
   * Gets the elements of the set.
   *
   * @returns {Array<*>}
   */
  getItemsArray() {
    return Array.from(this.selectedItems);
  }
}
exports.SelectedItemsController = SelectedItemsController;