Method _showPreviousPage

packages/main/src/YearRangePicker.ts:463–469

* Called by the Calendar component. * **Note:** when the user presses the "<" button in the calendar header (same as "PageUp") * @protected

()

	 * @protected
	 */
	_showPreviousPage() {
		const pageSize = this._getPageSize();
		this._modifyTimestampBy(-pageSize);

		const amountInYears = pageSize * this._getRangeSize();
		this._modifyGridStartBy(-amountInYears);
	}

	/**
	 * Called by the Calendar component.