"use strict";

exports.__esModule = true;
exports.default = void 0;
var _object = require("../../../../../helpers/object");
var MIXIN_NAME = 'stickyRowsBottom';

/**
 * Mixin for the subclasses of `Table` with implementations of
 * helper methods that are related to rows.
 * This mixin is meant to be applied in the subclasses of `Table`
 * that use sticky rendering of the bottom rows in the vertical axis.
 *
 * @type {object}
 */
var stickyRowsBottom = {
  /**
   * Get the source index of the first rendered row. If no rows are rendered, returns an error code: -1.
   *
   * @returns {number}
   * @this Table
   */
  getFirstRenderedRow: function getFirstRenderedRow() {
    var totalRows = this.wtSettings.getSetting('totalRows');
    var fixedRowsBottom = this.wtSettings.getSetting('fixedRowsBottom');
    var index = totalRows - fixedRowsBottom;
    if (totalRows === 0 || fixedRowsBottom === 0) {
      return -1;
    }
    if (index < 0) {
      return 0;
    }
    return index;
  },
  /**
   * Get the source index of the first row fully visible in the viewport. If no rows are fully visible, returns an error code: -1.
   * Assumes that all rendered rows are fully visible.
   *
   * @returns {number}
   * @this Table
   */
  getFirstVisibleRow: function getFirstVisibleRow() {
    return this.getFirstRenderedRow();
  },
  /**
   * Get the source index of the last rendered row. If no rows are rendered, returns an error code: -1.
   *
   * @returns {number}
   * @this Table
   */
  getLastRenderedRow: function getLastRenderedRow() {
    return this.wtSettings.getSetting('totalRows') - 1;
  },
  /**
   * Get the source index of the last row fully visible in the viewport. If no rows are fully visible, returns an error code: -1.
   * Assumes that all rendered rows are fully visible.
   *
   * @returns {number}
   * @this Table
   */
  getLastVisibleRow: function getLastVisibleRow() {
    return this.getLastRenderedRow();
  },
  /**
   * Get the number of rendered rows.
   *
   * @returns {number}
   * @this Table
   */
  getRenderedRowsCount: function getRenderedRowsCount() {
    var totalRows = this.wtSettings.getSetting('totalRows');
    return Math.min(this.wtSettings.getSetting('fixedRowsBottom'), totalRows);
  },
  /**
   * Get the number of fully visible rows in the viewport.
   * Assumes that all rendered rows are fully visible.
   *
   * @returns {number}
   * @this Table
   */
  getVisibleRowsCount: function getVisibleRowsCount() {
    return this.getRenderedRowsCount();
  },
  /**
   * Get the number of rendered column headers.
   *
   * @returns {number}
   * @this Table
   */
  getColumnHeadersCount: function getColumnHeadersCount() {
    return 0;
  }
};
(0, _object.defineGetter)(stickyRowsBottom, 'MIXIN_NAME', MIXIN_NAME, {
  writable: false,
  enumerable: false
});
var _default = stickyRowsBottom;
exports.default = _default;