/**
  * Prepare default values for given row's select fields
  * 
  * @param Varien_Object $row Row data object
  */
 protected function _prepareArrayRow(Varien_Object $row)
 {
     parent::_prepareArrayRow($row);
     $displayConfig = $row->hasData('display_config') ? (bool) $row->getData('display_config') : false;
     $row->setData('option_extra_attr_' . $this->_getDisplayConfigSelectRenderer()->calcOptionHash($displayConfig ? 1 : 0), 'selected="selected"');
     $row->setData('option_extra_attr_' . $this->_getAttributeSelectRenderer()->calcOptionHash($row->getData('attribute_id')), 'selected="selected"');
     $row->setData('option_extra_attr_' . $this->_getFileSaveMomentSelectRenderer()->calcOptionHash($row->getData('file_save_moment')), 'selected="selected"');
     $row->setData('option_extra_attr_' . $this->_getExceptionsHandlingModeSelectRenderer()->calcOptionHash($row->getData('exceptions_handling_mode')), 'selected="selected"');
     $imageOnly = $row->hasData('image_only') ? (bool) $row->getData('image_only') : false;
     $row->setData('option_extra_attr_' . $this->_getImageOnlySelectRenderer()->calcOptionHash($imageOnly ? 1 : 0), 'selected="selected"');
 }
 /**
  * (non-PHPdoc)
  * @see Mage_Adminhtml_Block_System_Config_Form_Field_Array_Abstract::_prepareArrayRow()
  */
 protected function _prepareArrayRow(Varien_Object $row)
 {
     $row->setData('option_extra_attr_' . $this->_getTemplateRenderer()->calcOptionHash($row->getData('iso')), 'selected="selected"');
     return parent::_prepareArrayRow($row);
 }