/**
* Adds a summary row to the given data table
*
* @param Piwik_DataTable $table
*/
public function filter($table)
{
if ($table->getRowsCount() <= $this->startRowToSummarize + 1) {
return;
}
$table->filter('Sort', array($this->columnToSortByBeforeTruncating, 'desc'));
$rows = $table->getRows();
$count = $table->getRowsCount();
$newRow = new Piwik_DataTable_Row();
for ($i = $this->startRowToSummarize; $i < $count; $i++) {
if (!isset($rows[$i])) {
// case when the last row is a summary row, it is not indexed by $cout but by Piwik_DataTable::ID_SUMMARY_ROW
$summaryRow = $table->getRowFromId(Piwik_DataTable::ID_SUMMARY_ROW);
//FIXME: I'm not sure why it could return false, but it was reported in: http://forum.piwik.org/read.php?2,89324,page=1#msg-89442
if ($summaryRow) {
$newRow->sumRow($summaryRow, $enableCopyMetadata = false);
}
} else {
$newRow->sumRow($rows[$i], $enableCopyMetadata = false);
}
}
$newRow->setColumns(array('label' => $this->labelSummaryRow) + $newRow->getColumns());
if ($this->deleteRows) {
$table->filter('Limit', array(0, $this->startRowToSummarize));
}
$table->addSummaryRow($newRow);
unset($rows);
}
/**
* Limits the given data table
*
* @param Piwik_DataTable $table
*/
public function filter($table)
{
$table->setRowsCountBeforeLimitFilter();
if ($this->keepSummaryRow) {
$summaryRow = $table->getRowFromId(Piwik_DataTable::ID_SUMMARY_ROW);
}
// we delete from 0 to offset
if ($this->offset > 0) {
$table->deleteRowsOffset(0, $this->offset);
}
// at this point the array has offset less elements. We delete from limit to the end
if ($this->limit >= 0) {
$table->deleteRowsOffset($this->limit);
}
if ($this->keepSummaryRow && $summaryRow) {
$table->addSummaryRow($summaryRow);
}
}
