/**
* Constructor
* @access public
* @param string scriptname
*/
public function ilShopExplorer($tpl, $a_target, $a_ref_id)
{
global $tree;
$this->tree = $tree;
$this->tpl = $tpl;
$this->target = $a_target;
$this->payment_objects = ilPaymentObject::getAllBuyableObjects();
$this->tpl->addCss('./Services/Payment/css/shop_tree.css');
$this->addFilter("root");
$this->addFilter("cat");
$this->addFilter('catr');
$this->addFilter("grp");
$this->addFilter("icrs");
$this->addFilter("crs");
$this->addFilter('crsr');
$this->addFilter('rcrs');
$this->addFilter('file');
$this->addFilter('tst');
$this->addFilter('exc');
$this->setFiltered(true);
$this->setFilterMode(IL_FM_NEGATIVE);
}