/**
* {@inheritdoc}
*/
public function paginate(\Closure $collectionCallback, $page, $itemsPerPage = 10, $pageRange = 5, $queryString = '', $pageParamName = 'page')
{
$pagination = new Pagination();
// If items per page is null then set extremely high limit
if (null === $itemsPerPage) {
$itemsPerPage = 99999999;
}
if ($itemsPerPage <= 0) {
throw new \InvalidArgumentException('Invalid item per page number, must be an unsigned integer');
}
if ($page <= 0) {
throw new \InvalidArgumentException('Invalid page number, must be an unsigned integer');
}
/** @var \Iris\Utility\Pagination\CollectionInterface $collection */
$collection = $collectionCallback(0, 0);
if (!$collection instanceof CollectionInterface) {
throw new \RuntimeException('Collection callback must return Iris\\Utility\\Pagination\\CollectionInterface');
}
$pagination->setTotalItemCount($collection->getTotalRecords());
$totalRecords = $collection->getTotalRecords();
$pageCount = (int) ceil($totalRecords / $itemsPerPage);
$current = $page;
if ($pageRange > $pageCount) {
$pageRange = $pageCount;
}
$delta = (int) ceil($pageRange / 2);
if ($current - $delta > $pageCount - $pageRange) {
$pages = range($pageCount - $pageRange + 1, $pageCount);
} else {
if ($current - $delta < 0) {
$delta = $current;
}
$offset = $current - $delta;
$pages = range($offset + 1, $offset + $pageRange);
}
$limit = ($current - 1) * $itemsPerPage;
/** @var \Iris\Utility\Pagination\CollectionInterface $collection */
$collection = $collectionCallback($limit, $itemsPerPage);
$pagination->setItems($collection->getRecords())->setPages($pages)->setTotalItemCount($totalRecords)->setCurrentPageNumber($current)->setFirstPageNumber(1)->setTotalPageCount($pageCount)->setItemsPerPage($itemsPerPage)->setLastPageNumber($pageCount)->setFirstPageInRange(min($pages))->setLastPageInRange(max($pages))->setCurrentItemCount(count($collection->getRecords()))->setQueryString($this->_buildQueryString($queryString, $pageParamName));
if ($current - 1 > 0) {
$pagination->setPreviousPageNumber($current - 1);
}
if ($current + 1 <= $pageCount) {
$pagination->setNextPageNumber($current + 1);
}
return $pagination;
}
