/**
* Constructor.
* @param TDataGridItem datagrid item responsible for the event
* @param TControl original event sender
* @param \Prado\Web\UI\TCommandEventParameter original event parameter
*/
public function __construct($item, $source, \Prado\Web\UI\TCommandEventParameter $param)
{
$this->_item = $item;
$this->_source = $source;
parent::__construct($param->getCommandName(), $param->getCommandParameter());
}