From cf4e87103ea39677245bb1165b41b5fe51102a4e Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Thu, 15 Nov 2012 12:13:59 -0700
Subject: [PATCH] Emit row-oriented screen lien change events from
 `EditSession`

---
 src/app/edit-session.coffee | 11 ++++++++++-
 src/app/editor.coffee       | 12 ++----------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/app/edit-session.coffee b/src/app/edit-session.coffee
index 066765ff8..31f24307e 100644
--- a/src/app/edit-session.coffee
+++ b/src/app/edit-session.coffee
@@ -61,7 +61,16 @@ class EditSession
 
     @displayBuffer.on "change.edit-session-#{@id}", (e) =>
       @refreshAnchorScreenPositions() unless e.bufferChange
-      @trigger 'screen-lines-change', e
+
+      { oldRange, newRange } = e
+      start = oldRange.start.row
+      end = oldRange.end.row
+      screenDelta = newRange.end.row - oldRange.end.row
+
+      if bufferChange = e.bufferChange
+        bufferDelta = bufferChange.newRange.end.row - bufferChange.oldRange.end.row
+
+      @trigger 'screen-lines-change', {start, end, screenDelta, bufferDelta}
 
   destroy: ->
     throw new Error("Edit session already destroyed") if @destroyed
diff --git a/src/app/editor.coffee b/src/app/editor.coffee
index ba410f5d0..adb2592fa 100644
--- a/src/app/editor.coffee
+++ b/src/app/editor.coffee
@@ -896,16 +896,8 @@ class Editor extends View
   getLastVisibleScreenRow: ->
     Math.max(0, Math.ceil((@scrollTop() + @scrollView.height()) / @lineHeight) - 1)
 
-  handleScreenLinesChange: (e) ->
-    { oldRange, newRange } = e
-    start = oldRange.start.row
-    end = oldRange.end.row
-    screenDelta = newRange.end.row - oldRange.end.row
-
-    if bufferChange = e.bufferChange
-      bufferDelta = bufferChange.newRange.end.row - bufferChange.oldRange.end.row
-
-    @pendingChanges.push({start, end, screenDelta, bufferDelta})
+  handleScreenLinesChange: (change) ->
+    @pendingChanges.push(change)
     @requestDisplayUpdate()
 
   buildLineElementForScreenRow: (screenRow) ->