From 8471ffed29c0a59d989fb35439359efc8abdd674 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Wed, 11 Dec 2013 11:10:06 -0800
Subject: [PATCH] Observe scroll* behaviors instead of the entire state
 document

---
 src/editor.coffee | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/editor.coffee b/src/editor.coffee
index 3d7dc7f2d..3051b3014 100644
--- a/src/editor.coffee
+++ b/src/editor.coffee
@@ -89,13 +89,9 @@ class Editor extends Model
       @addCursorAtBufferPosition(position)
 
     @languageMode = new LanguageMode(this, @buffer.getExtension())
-    @subscribe @state, 'changed', ({newValues}) =>
-      for key, newValue of newValues
-        switch key
-          when 'scrollTop'
-            @emit 'scroll-top-changed', newValue
-          when 'scrollLeft'
-            @emit 'scroll-left-changed', newValue
+
+    @subscribe @$scrollTop, 'value', (scrollTop) => @emit 'scroll-top-changed', scrollTop
+    @subscribe @$scrollLeft, 'value', (scrollLeft) => @emit 'scroll-left-changed', scrollLeft
 
   # Deprecated: The goal is a world where we don't call serialize explicitly
   serialize: -> this