Tax::checkModifyTaxList

protected function checkModifyTaxList(array $taxList)
{
	$oldTaxList = $this->loadList();

	$taxIndexList = array();

	if (!empty($oldTaxList) && is_array($oldTaxList))
	{
		$oldTaxIndexList = array();
		foreach ($oldTaxList as $taxOldKey => $taxOldValue)
		{
			$oldTaxIndexList[$taxOldValue['NAME']."|".$taxOldValue['CODE']] = $taxOldKey;
		}

		foreach ($taxList as $taxValue)
		{
			if (array_key_exists($taxValue['NAME']."|".$taxValue['CODE'], $oldTaxIndexList))
			{
				$taxIndexList[$taxValue['NAME']."|".$taxValue['CODE']] = $oldTaxIndexList[$taxValue['NAME']."|".$taxValue['CODE']];
			}
		}
	}

	if (!empty($taxList) && is_array($taxList))
	{
		foreach ($taxList as $taxKey => $taxValue)
		{
			$taxCode = $taxValue['NAME']."|".$taxValue['CODE'];
			if (isset($taxIndexList[$taxCode]))
			{
				$oldTaxKey = $taxIndexList[$taxCode];

				$oldTaxValueDat = $oldTaxList[$oldTaxKey];
				foreach($taxValue as $key => $value)
				{
					if (array_key_exists($key, $oldTaxValueDat))
					{
						if ($oldTaxValueDat[$key] != $value)
						{
							$oldTaxList[$oldTaxKey][$key] = $value;

							if (!in_array($taxCode, $this->changedValues))
							{
								$this->changedValues[$taxCode] = true;
							}
						}
					}
					else
					{
						$oldTaxList[$oldTaxKey][$key] = $value;
						if (!in_array($taxCode, $this->changedValues))
						{
							$this->changedValues[$taxCode] = true;
						}
					}
				}
			}
			else
			{
				$oldTaxList[] = array(
					'NAME' => $taxValue['NAME'],
					'IS_PERCENT' => $taxValue['IS_PERCENT'],
					'VALUE' => $taxValue['VALUE'],
					'VALUE_MONEY' => $taxValue['VALUE_MONEY'],
					'APPLY_ORDER' => $taxValue['APPLY_ORDER'],
					'IS_IN_PRICE' => $taxValue['IS_IN_PRICE'],
					'TAX_VAL' => $taxValue['TAX_VAL'],
					'CODE' => $taxValue['CODE'],
				);

//				if (!in_array($taxCode, $this->changedValues))
//				{
//					$this->changedValues[$taxCode] = true;
//				}
			}
		}

		// one tax to order
		$taxListModify1C = array();
		foreach($oldTaxList as $taxOrder)
		{
			if($taxOrder['CODE'] == 'VAT1C')
			{
				$taxListModify1C[] = $taxOrder;
			}
		}

		if(count($taxListModify1C)>0)
		{
			$oldTaxList = $taxListModify1C;
		}
	}
	else
	{
		$oldTaxList = array();
	}

	return $oldTaxList;
}