From: jprocter <Jim Procter>
Date: Thu, 15 Apr 2010 09:20:28 +0000 (+0000)
Subject: nullpointer bugfix (another repaint racecondition)
X-Git-Tag: Release_2_5~70
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=53ec6ec5b4b6288bd8f33162a9974cc3a0a16c91;p=jalview.git

nullpointer bugfix (another repaint racecondition)
---

diff --git a/src/jalview/gui/SeqCanvas.java b/src/jalview/gui/SeqCanvas.java
index 77b8938..ad5e052 100755
--- a/src/jalview/gui/SeqCanvas.java
+++ b/src/jalview/gui/SeqCanvas.java
@@ -695,7 +695,10 @@ public class SeqCanvas extends JComponent
     {
       nextSeq = av.alignment.getSequenceAt(i);
       if (nextSeq==null)
+      {
+        // occasionally, a race condition occurs such that the alignment row is empty
         continue;
+      }
       sr.drawSequence(nextSeq, av.alignment.findAllGroups(nextSeq),
               startRes, endRes, offset + ((i - startSeq) * av.charHeight));