From 7fd5eefe0435a6b0961351fb62c7957ff8c7b78f Mon Sep 17 00:00:00 2001
From: Galkin Ivan <galkinivanv@gmail.com>
Date: Sat, 1 Apr 2017 06:12:31 +0300
Subject: [PATCH] Add empty cell condition for conditional formatting (#128)

---
 src/PhpSpreadsheet/Style/Conditional.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/PhpSpreadsheet/Style/Conditional.php b/src/PhpSpreadsheet/Style/Conditional.php
index 1387d35f..d8d66213 100644
--- a/src/PhpSpreadsheet/Style/Conditional.php
+++ b/src/PhpSpreadsheet/Style/Conditional.php
@@ -31,6 +31,7 @@ class Conditional implements \PhpOffice\PhpSpreadsheet\IComparable
     const CONDITION_CELLIS = 'cellIs';
     const CONDITION_CONTAINSTEXT = 'containsText';
     const CONDITION_EXPRESSION = 'expression';
+    const CONDITION_CONTAINSBLANKS = 'containsBlanks';
 
     /* Operator types */
     const OPERATOR_NONE = '';