handsontable/3rdparty/walkontable/src/utils/orderView/viewSizeSet.mjs

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

import "core-js/modules/es.error.cause.js";
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); }
import { ViewSize } from "./viewSize.mjs";
import { WORKING_SPACE_ALL, WORKING_SPACE_TOP, WORKING_SPACE_BOTTOM } from "./constants.mjs";
/**
 * The class is a source of the truth of information about the current and
 * next size of the rendered DOM elements and current and next offset of
 * the view. That information allows us to calculate diff between current
 * DOM order and this which should be rendered without touching the DOM API at all.
 *
 * Mostly the ViewSizeSet is created for each individual renderer. But in
 * the table, there is one case where this size information should be shared
 * between two different instances (different table renderers). This is a TR
 * element which can contain TH elements - managed by own renderer and
 * TD elements - managed by another renderer. To generate correct DOM order
 * for them it is required to connect these two instances by reference
 * through `sharedSize`.
 *
 * @class {ViewSizeSet}
 */
export class ViewSizeSet {
  constructor() {
    /**
     * Holder for current and next view size and offset.
     *
     * @type {ViewSize}
     */
    _defineProperty(this, "size", new ViewSize());
    /**
     * Defines if this instance shares its size with another instance. If it's in the shared
     * mode it defines what space it occupies ('top' or 'bottom').
     *
     * @type {number}
     */
    _defineProperty(this, "workingSpace", WORKING_SPACE_ALL);
    /**
     * Shared Size instance.
     *
     * @type {ViewSize}
     */
    _defineProperty(this, "sharedSize", null);
  }
  /**
   * Sets the size for rendered elements. It can be a size for rows, cells or size for row
   * headers etc.
   *
   * @param {number} size The size.
   */
  setSize(size) {
    this.size.setSize(size);
  }

  /**
   * Sets the offset for rendered elements. The offset describes the shift between 0 and
   * the first rendered element according to the scroll position.
   *
   * @param {number} offset The offset.
   */
  setOffset(offset) {
    this.size.setOffset(offset);
  }

  /**
   * Returns ViewSize instance.
   *
   * @returns {ViewSize}
   */
  getViewSize() {
    return this.size;
  }

  /**
   * Checks if this ViewSizeSet is sharing the size with another instance.
   *
   * @returns {boolean}
   */
  isShared() {
    return this.sharedSize !== null;
  }

  /**
   * Checks what working space describes this size instance.
   *
   * @param {number} workingSpace The number which describes the type of the working space (see constants.js).
   * @returns {boolean}
   */
  isPlaceOn(workingSpace) {
    return this.workingSpace === workingSpace;
  }

  /**
   * Appends the ViewSizeSet instance to this instance that turns it into a shared mode.
   *
   * @param {ViewSizeSet} viewSize The instance of the ViewSizeSet class.
   */
  append(viewSize) {
    this.workingSpace = WORKING_SPACE_TOP;
    viewSize.workingSpace = WORKING_SPACE_BOTTOM;
    this.sharedSize = viewSize.getViewSize();
  }

  /**
   * Prepends the ViewSize instance to this instance that turns it into a shared mode.
   *
   * @param {ViewSizeSet} viewSize The instance of the ViewSizeSet class.
   */
  prepend(viewSize) {
    this.workingSpace = WORKING_SPACE_BOTTOM;
    viewSize.workingSpace = WORKING_SPACE_TOP;
    this.sharedSize = viewSize.getViewSize();
  }
}