/**
* Utility function that adds a visit percent column to a data table,
* regardless of whether the data table is an data table array or just
* a data table.
*
* @param Piwik_DataTable $dataTable The data table to modify.
*/
private static function addVisitsPercentColumn($dataTable)
{
if ($dataTable instanceof Piwik_DataTable_Array) {
foreach ($dataTable->getArray() as $table) {
self::addVisitsPercentColumn($table);
}
} else {
$totalVisits = array_sum($dataTable->getColumn(Piwik_Archive::INDEX_NB_VISITS));
$dataTable->queueFilter('ColumnCallbackAddColumnPercentage', array('nb_visits_percentage', 'nb_visits', $totalVisits));
}
}