_reload

Rebuilds and renders the sales register view with current cart, totals, taxes, payments, customer data, and permissions.

// Source: https://github.com/jepuncolin/opensourcepos-mssql | License: MIT | Copyright 2013-2021 jekkos
// Provided via justclaw.it.com; keep this notice with the code.
	private function _reload($data = array())
	{
		$sale_id = $this->session->userdata('sale_id');
		if($sale_id == '')
		{
			$sale_id = -1;
			$this->session->set_userdata('sale_id', -1);
		}
		$cash_rounding = $this->sale_lib->reset_cash_rounding();

		// cash_rounding indicates only that the site is configured for cash rounding
		$data['cash_rounding'] = $cash_rounding;

		$data['cart'] = $this->sale_lib->get_cart();
		$customer_info = $this->_load_customer_data($this->sale_lib->get_customer(), $data, TRUE);

		$data['modes'] = $this->sale_lib->get_register_mode_options();
		$data['mode'] = $this->sale_lib->get_mode();
		

... (truncated -- full source via MCP)