/**
* Retrieve loaded category collection
*
* @return Mage_Eav_Model_Entity_Collection_Abstract
*/
protected function _getProductCollection()
{
if (is_null($this->_productCollection)) {
$layer = $this->getLayer();
$origCategory = null;
if ($this->getCategoryId()) {
$category = Mage::getModel('catalog/category')->load($this->getCategoryId());
if ($category->getId()) {
$origCategory = $layer->getCurrentCategory();
$layer->setCurrentCategory($category);
}
}
$this->_productCollection = $layer->getProductCollection();
$this->prepareSortableFieldsByCategory($layer->getCurrentCategory());
if ($sort = $this->getSortBy()) {
$this->_productCollection->setOrder($sort);
}
if ($origCategory) {
$layer->setCurrentCategory($origCategory);
}
}
return $this->_productCollection;
}
