/**
* Export grid data in given format
*
* @param string $format Export format
* @param array $infos Export informations
* @return mixed
*/
protected function _exportFile($format, $infos = null)
{
if (!is_null($this->_typeModel)) {
$this->_typeModel->beforeGridExport($format, null);
}
$block = Mage::getSingleton('core/layout')->createBlock($this->getBlockType());
if (!is_null($infos)) {
$block->blcg_setExportInfos($infos);
}
if (!is_null($this->_typeModel)) {
$this->_typeModel->beforeGridExport($format, $block);
}
switch ($format) {
case 'csv':
$return = $block->getCsvFile();
break;
case 'xml':
$return = $block->getExcelFile();
break;
default:
$return = null;
break;
}
if (!is_null($this->_typeModel)) {
$this->_typeModel->afterGridExport($format, $block);
}
return $return;
}
