Method _insertElements

src/core/core.datasetController.js:994–1020

* @private

(start, count, resetNewElements = true)

	 * @private
	 */
  _insertElements(start, count, resetNewElements = true) {
    const meta = this._cachedMeta;
    const data = meta.data;
    const end = start + count;
    let i;

    const move = (arr) => {
      arr.length += count;
      for (i = arr.length - 1; i >= end; i--) {
        arr[i] = arr[i - count];
      }
    };
    move(data);

    for (i = start; i < end; ++i) {
      data[i] = new this.dataElementType();
    }

    if (this._parsing) {
      move(meta._parsed);
    }
    this.parse(start, count);

    if (resetNewElements) {
      this.updateElements(data, start, count, 'reset');
    }
  }

  updateElements(element, start, count, mode) {} // eslint-disable-line no-unused-vars