From 6e6da98f2120e4e2dc8ac2618a412e1b6c8326d0 Mon Sep 17 00:00:00 2001
From: josdejong <wjosdejong@gmail.com>
Date: Wed, 5 Mar 2014 13:50:08 +0100
Subject: [PATCH] A fix in updating the visible items

---
 src/timeline/component/ItemSet.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/timeline/component/ItemSet.js b/src/timeline/component/ItemSet.js
index c8028004..d7fa4d02 100644
--- a/src/timeline/component/ItemSet.js
+++ b/src/timeline/component/ItemSet.js
@@ -299,7 +299,7 @@ ItemSet.prototype.repaint = function repaint() {
   }
 
   // find start of visible items
-  var start = this.visibleItemsStart;
+  var start = Math.min(this.visibleItemsStart, Math.max(this.orderedItems.length - 1, 0));
   var item = this.orderedItems[start];
   while (item && item.isVisible() && start > 0) {
     start--;
@@ -314,7 +314,7 @@ ItemSet.prototype.repaint = function repaint() {
   this.visibleItemsStart = start;
 
   // find end of visible items
-  var end = Math.max(this.visibleItemsStart, this.visibleItemsEnd);
+  var end = Math.max(Math.min(this.visibleItemsEnd, this.orderedItems.length), this.visibleItemsStart);
   item = this.orderedItems[end];
   while (item && item.isVisible()) {
     end++;