protected function getTabHtmlById($id) { if (!Mage::helper('M2ePro/View_Common_Component')->isSingleActiveComponent()) { return parent::getTabHtmlById($id); } /** @var $singleBlock Mage_Core_Block_Abstract|Mage_Adminhtml_Block_Widget_Grid_Container */ $singleBlock = $this->getSingleBlock(); if (is_object($singleBlock) && $singleBlock instanceof Mage_Adminhtml_Block_Widget_Grid_Container) { return $singleBlock->getGridHtml(); } return parent::getTabHtmlById($id); }