Optimize header fetching of multi-folder searches with natural (UID) sorting

1 files changed, 15 insertions, 0 deletions

diff --git a/program/lib/Roundcube/rcube_result_multifolder.php b/program/lib/Roundcube/rcube_result_multifolder.php
index ac0889526..74a3d7805 100644
--- a/program/lib/Roundcube/rcube_result_multifolder.php
+++ b/program/lib/Roundcube/rcube_result_multifolder.php
@@ -169,6 +169,21 @@ class rcube_result_multifolder
     }
 
     /**
+     * Slices data set.
+     *
+     * @param $offset Offset (as for PHP's array_slice())
+     * @param $length Number of elements (as for PHP's array_slice())
+     *
+     */
+    public function slice($offset, $length)
+    {
+        $data = array_slice($this->get(), $offset, $length);
+
+        $this->index = $data;
+        $this->meta['count'] = count($data);
+    }
+
+    /**
      * Filters data set. Removes elements not listed in $ids list.
      *
      * @param array $ids List of IDs to keep.