protected function _beforeToHtml()
{
parent::_beforeToHtml();
$this->setCanDisplayTotalPaid($this->getParentBlock()->getCanDisplayTotalPaid());
$this->setCanDisplayTotalRefunded($this->getParentBlock()->getCanDisplayTotalRefunded());
$this->setCanDisplayTotalDue($this->getParentBlock()->getCanDisplayTotalDue());
}
/**
* Retrieve required options from parent
*/
protected function _beforeToHtml()
{
if (!$this->getParentBlock()) {
Mage::throwException(Mage::helper('adminhtml')->__('Invalid parrent block for this block'));
}
$this->setOrder($this->getParentBlock()->getSource());
parent::_beforeToHtml();
}
