From 50c1482a7fd2b0a57160296df25c1cf458ea3acd Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Wed, 6 Jul 2016 18:26:34 +0300
Subject: [PATCH] some fixes for calendar

---
 treegrid.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/treegrid.js b/treegrid.js
index 7985ab6..a04e3a3 100644
--- a/treegrid.js
+++ b/treegrid.js
@@ -175,7 +175,7 @@ TreeGrid.prototype.stopCellEditing = function(td, _int)
     var i = this._getCellIndex(td);
     var node = td.parentNode._node;
     node._oldCells[i] = undefined;
-    var params = this.onStopCellEdit && this.onStopCellEdit(node, i, td.firstChild.value, td) || {};
+    var params = this.onStopCellEdit && this.onStopCellEdit(node, i, td.firstChild ? td.firstChild.value : null, td) || {};
     node.render(i);
     if (!_int)
     {