1 files changed, 69 insertions, 0 deletions
diff --git a/include/functions.inc.php b/include/functions.inc.php
index 83c9980de..3f43b943a 100644
--- a/include/functions.inc.php
+++ b/include/functions.inc.php
@@ -1493,4 +1493,73 @@ function get_comment_post_key($image_id)
       )
     );
 }
+
+/**
+ * return an array which will be sent to template to display navigation bar
+ */
+function create_navigation_bar($url, $nb_element, $start, $nb_element_page, $clean_url = false)
+{
+  global $conf;
+
+  $pages_around = $conf['paginate_pages_around'];
+  $start_str = $clean_url ? '/start-' : (strpos($url, '?')===false ? '?':'&amp;').'start=';
+
+  if (!isset($start) or !is_numeric($start) or (is_numeric($start) and $start < 0))
+  {
+    $start = 0;
+  }
+
+  $navbar = array();
+
+  // navigation bar useful only if more than one page to display !
+  if ($nb_element > $nb_element_page)
+  {
+    // current page and last page
+    $cur_page = ceil($start / $nb_element_page) + 1;
+    $maximum = ceil($nb_element / $nb_element_page);
+
+    $navbar['CURRENT_PAGE'] = $cur_page;
+
+    // link to first page ?
+    if ($cur_page != 1)
+    {
+      $navbar['URL_FIRST'] = $url;
+    }
+    // link on previous page ?
+    if ($start != 0)
+    {
+      $previous = $start - $nb_element_page;
+      $navbar['URL_PREV'] = $url.($previous > 0 ? $start_str.$previous : '');
+    }
+    // link on next page ?
+    if ($nb_element > $nb_element_page and $start + $nb_element_page < $nb_element)
+    {
+      $next = $start + $nb_element_page;
+      $navbar['URL_NEXT'] = $url.$start_str.$next;
+    }
+    // link to last page ?
+    if ($cur_page != $maximum)
+    {
+      $temp_start = ($maximum - 1) * $nb_element_page;
+      $navbar['URL_LAST'] = $url.$start_str.$temp_start;
+    }
+
+    // pages to display
+    $navbar['pages'] = array();
+
+    $navbar['pages'][1] = $url;
+    $navbar['pages'][$maximum] = $url.$start_str. ($maximum - 1) * $nb_element_page;
+
+    for ($i = $cur_page - $pages_around, $stop = $cur_page + $pages_around + 1; $i < $stop; $i++)
+    {
+      if ($i < 2 or $i > $maximum - 1)
+      {
+        continue;
+      }
+      $navbar['pages'][$i] = $url.$start_str. ($i - 1) * $nb_element_page;
+    }
+    ksort($navbar['pages']);
+  }
+  return $navbar;
+}
 ?>
 \ No newline at end of file