TPagedDataSource implements an integer-indexed collection class with paging functionality.
Data items in TPagedDataSource can be traversed using foreach
PHP statement like the following,
foreach($pagedDataSource as $dataItem)
The data are fetched from {@link setDataSource DataSource}. Only the items
within the specified page will be returned and traversed.
/**
* @return TPagedDataSource creates a paged data source
*/
protected function createPagedDataSource()
{
$ds = new TPagedDataSource();
$ds->setCurrentPageIndex($this->getCurrentPageIndex());
$ds->setPageSize($this->getPageSize());
$ds->setAllowPaging($this->getAllowPaging());
$ds->setAllowCustomPaging($this->getAllowCustomPaging());
$ds->setVirtualItemCount($this->getVirtualItemCount());
return $ds;
}