public function getURL()
    {
        if (!isset($this->_url)) {
            $this->_url = 'option='.$this->component.'&view='.$this->_mixer->getIdentifier()->name;

            if ($this->_mixer->id) {
                $this->_url .= '&id='.$this->_mixer->id;
            }
        }

        return $this->_url;
    }