From a8a552beb997f1af3608aa21d325e071fd04074e Mon Sep 17 00:00:00 2001
From: Ricky Chien <rchien@mozilla.com>
Date: Wed, 4 Jan 2017 11:52:26 +0800
Subject: [PATCH] Bug 1328498 - Sourceeditor appendTo HTML element supports
 r=Honza

MozReview-Commit-ID: 1gdhH8PdIuc

--HG--
extra : rebase_source : f6722997d50d47d7a43e01921af2135b165295d9
---
 devtools/client/sourceeditor/editor.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/devtools/client/sourceeditor/editor.js b/devtools/client/sourceeditor/editor.js
index eaf6fa04e83a..54fa82abc2a2 100644
--- a/devtools/client/sourceeditor/editor.js
+++ b/devtools/client/sourceeditor/editor.js
@@ -257,10 +257,12 @@ Editor.prototype = {
     let cm = editors.get(this);
 
     if (!env) {
-      env = el.ownerDocument.createElementNS(XUL_NS, "iframe");
-    }
+      env = el.ownerDocument.createElementNS(el.namespaceURI, "iframe");
 
-    env.flex = 1;
+      if (el.namespaceURI === XUL_NS) {
+        env.flex = 1;
+      }
+    }
 
     if (cm) {
       throw new Error("You can append an editor only once.");