/**
* Allows free shipping when all product items have free shipping (promotions etc.)
*
* @param Mage_Shipping_Model_Rate_Request $request
* @return void
*/
protected function _updateFreeMethodQuote($request)
{
$freeShipping = false;
$items = $request->getAllItems();
$c = count($items);
for ($i = 0; $i < $c; $i++) {
if ($items[$i]->getProduct() instanceof Mage_Catalog_Model_Product) {
if ($items[$i]->getFreeShipping()) {
$freeShipping = true;
} else {
return;
}
}
}
if ($freeShipping) {
$request->setFreeShipping(true);
}
}
