From f3462245d5055fc7da56453117045be7c25291f9 Mon Sep 17 00:00:00 2001
From: Matthew Harrison-Jones <matthojo@gmail.com>
Date: Thu, 18 Jul 2013 12:06:52 +0100
Subject: [PATCH] Debounce scrolling on editor

---
 core/client/views/editor.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/core/client/views/editor.js b/core/client/views/editor.js
index 3e89b03235..827f631d45 100644
--- a/core/client/views/editor.js
+++ b/core/client/views/editor.js
@@ -167,7 +167,6 @@
             this.initMarkdown();
             this.renderPreview();
 
-            // TODO: Debounce
             this.$('.CodeMirror-scroll').on('scroll', this.syncScroll);
 
             // Shadow on Markdown if scrolled
@@ -200,7 +199,7 @@
 
         },
 
-        syncScroll: function (e) {
+        syncScroll: _.debounce(function (e) {
             var $codeViewport = $(e.target),
                 $previewViewport = $('.entry-preview-content'),
                 $codeContent = $('.CodeMirror-sizer'),
@@ -214,7 +213,7 @@
 
             // apply new scroll
             $previewViewport.scrollTop(previewPostition);
-        },
+        }, 50),
 
         // This updates the editor preview panel.
         // Currently gets called on every key press.