function strip_query_string_of($aKeys)
{
$aGET = $_GET;
foreach ($aKeys as $key) {
if (isset($aGET[$key])) {
unset($aGET[$key]);
}
}
return add_to_query_string('', $aGET);
}
public function toXhtml()
{
// step 1: do we have any pages to render?
if ($this->totalPages < 1) {
return LANG_RENDER_NO_PAGES;
}
// step 2: do we only have the one page to render?
if ($this->totalPages == 1) {
return sprintf(LANG_RENDER_SHOWING_ALL_RESULTS, $this->totalResults);
}
// if we get here, then we have a set of pages to render
$totalPages = $this->totalPages;
$startPage = 1;
$endPage = $totalPages;
// do we have too many pages?
// we show up to ten pages at a time
if ($totalPages > 10) {
$startPage = $this->page - 5;
if ($startPage < 1) {
$startPage = 1;
}
$endPage = $startPage + 9;
if ($endPage > $totalPages) {
$endPage = $totalPages;
$startPage = $endPage - 9;
}
}
$startRecord = ($this->page - 1) * $this->resultsPerPage + 1;
$endRecord = $startRecord + $this->resultsThisPage - 1;
// work out our query string
$baseQuery = strip_query_string_of(array($this->pageKey));
// build up the list of pages
$return = sprintf(LANG_RENDER_SHOWING_RESULTS_OF, $startRecord - $endRecord, $this->totalResults) . ' ' . LANG_RENDER_PAGE_LIST;
$append = false;
// if we have too many pages, then add a link to the first
// page in the list
if ($startPage > 1) {
$query = add_to_query_string($baseQuery, array($this->pageKey => 1));
$return .= "<a href=\"?{$query}\"><<</a>";
$append = true;
}
// build up the list of pages
for ($i = $startPage; $i <= $endPage; $i++) {
if ($append) {
$return .= " | ";
}
$append = true;
if ($i == $this->page) {
$return .= "<span class=\"currentPage\">" . $i . "</span>";
} else {
$query = add_to_query_string($baseQuery, array($this->pageKey => $i));
$return .= "<a href=\"?{$query}\">{$i}</a>";
}
}
// if we have too many pages, add a link to the last page
// in the list
if ($endPage < $totalPages) {
$return .= " | ";
$query = add_to_query_string($baseQuery, array($this->pageKey => $totalPages));
$return .= "<a href=\"?{$query}\">>></a>";
$append = true;
}
return $return;
}
