DownloadController::processActionShowPreview

protected function processActionShowPreview()
{
	if(!$this->file->getPreviewId())
	{
		$this->end();
	}

	$fileName = $this->file->getView()->getPreviewName();
	$fileData = $this->file->getView()->getPreviewData();

	$cacheTime = 86400;

	$this->showFileByArray($fileName, $fileData, $cacheTime);
}