Method getByRange

handsontable/src/dataMap/dataSource.ts:342–374

* Returns source data by passed range. * * @param {object} [start] Object with physical `row` and `col` keys (or visual column index, if data type is an array of objects). * @param {object} [end] Object with physical `row` and `col` keys (or visual column index, if data type is an array of

(
    start: {row?: number, col?: number} | null = null, end: {row?: number, col?: number} | null = null, toArray = false
  )

   * @returns {Array}
   */
  getByRange(
    start: {row?: number, col?: number} | null = null, end: {row?: number, col?: number} | null = null, toArray = false
  ) {
    let getAllProps = false;
    let startRow = null;
    let startCol = null;
    let endRow = null;
    let endCol = null;

    if (start === null || end === null) {
      getAllProps = true;
      startRow = 0;
      endRow = this.countRows() - 1;

    } else {
      startRow = Math.min(start.row!, end.row!);
      startCol = Math.min(start.col!, end.col!);
      endRow = Math.max(start.row!, end.row!);
      endCol = Math.max(start.col!, end.col!);
    }

    const result: unknown[] = [];

    rangeEach(startRow, endRow, (currentRow: number) => {
      result.push((
        getAllProps ?
          this.getAtRow(currentRow, undefined, undefined, toArray) :
          this.getAtRow(currentRow, startCol!, endCol!, toArray)
      ));
    });

    return result;
  }

  /**
   * Returns single value from the data array (intended for clipboard copy to an external application).