From db8e3ff0a9599a19d618fd048fa77f2862acdee2 Mon Sep 17 00:00:00 2001
From: Jason San Jose <jasonsj@adobe.com>
Date: Wed, 10 Apr 2013 14:12:29 -0700
Subject: [PATCH] safe fix for #3403. only support live preview for known
 subset of HTML document extensions.

---
 src/LiveDevelopment/Agents/CSSAgent.js | 6 +++++-
 src/LiveDevelopment/LiveDevelopment.js | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/LiveDevelopment/Agents/CSSAgent.js b/src/LiveDevelopment/Agents/CSSAgent.js
index bc25a1965da..21ff77e6fff 100644
--- a/src/LiveDevelopment/Agents/CSSAgent.js
+++ b/src/LiveDevelopment/Agents/CSSAgent.js
@@ -67,7 +67,11 @@ define(function CSSAgent(require, exports, module) {
      * @param {string} url
      */
     function styleForURL(url) {
-        return _urlToStyle[_canonicalize(url)];
+        if (_urlToStyle) {
+            return _urlToStyle[_canonicalize(url)];
+        }
+        
+        return null;
     }
 
     /** Get a list of all loaded stylesheet files by URL */
diff --git a/src/LiveDevelopment/LiveDevelopment.js b/src/LiveDevelopment/LiveDevelopment.js
index 6dd20ea7a28..90e6319081f 100644
--- a/src/LiveDevelopment/LiveDevelopment.js
+++ b/src/LiveDevelopment/LiveDevelopment.js
@@ -923,7 +923,7 @@ define(function LiveDevelopment(require, exports, module) {
             return false;
         }
 
-        return true;
+        return _isHtmlFileExt(localPath);
     };
 
     /**