From 9e59f290d1f7897d7c867263e093b14c51120905 Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@mit.edu>
Date: Thu, 26 Apr 2018 23:35:19 -0400
Subject: [PATCH] Bug 1455674 part 7.  Simplify HTMLEditor::GetFocusedNode. 
 r=masayuki

---
 editor/libeditor/HTMLEditor.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/editor/libeditor/HTMLEditor.cpp b/editor/libeditor/HTMLEditor.cpp
index ec8225ea8b05..8be9dbe26c5a 100644
--- a/editor/libeditor/HTMLEditor.cpp
+++ b/editor/libeditor/HTMLEditor.cpp
@@ -4948,6 +4948,11 @@ HTMLEditor::GetFocusedNode()
     return nullptr;
   }
 
+  // focusedContent might be non-null even fm->GetFocusedContent() is
+  // null.  That's the designMode case, and in that case our
+  // FocusedContent() returns the root element, but we want to return
+  // the document.
+
   nsIFocusManager* fm = nsFocusManager::GetFocusManager();
   NS_ASSERTION(fm, "Focus manager is null");
   nsCOMPtr<nsIDOMElement> focusedElement;