From 3a1edfe2cea639c165808a35c3a3d17e88a8bf0c Mon Sep 17 00:00:00 2001
From: Aaron Oneal <aaron.oneal@spicypixel.com>
Date: Tue, 20 Aug 2013 17:26:19 -0700
Subject: Fix crash in macdoc

ScrollToVisible is sometimes called on the previous node, and in some cases this previous node does not have a registered wrapper which causes macdoc to crash. This fix adds a check for the node instead of throwing.
---
 MyDocument.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MyDocument.cs b/MyDocument.cs
index b7e624d..a46126b 100644
--- a/MyDocument.cs
+++ b/MyDocument.cs
@@ -514,6 +514,9 @@ namespace macdoc
 		
 		int ScrollToVisible (Node n)
 		{
+			if (!nodeToWrapper.ContainsKey (n))
+				return 0;
+
 			var item = nodeToWrapper [n];
 			var row = outlineView.RowForItem (item);
 			outlineView.ScrollRowToVisible (row);
-- 
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