From 265a620beebb46e77c9ab81d8f915193b93ad59c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 29 Jul 2020 09:42:35 +0530
Subject: [PATCH] Fix Edit button in highlights panel not working

I dont know why defaultView is undefined, seems like a chrome bug
---
 src/pyj/read_book/viewport.pyj | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/pyj/read_book/viewport.pyj b/src/pyj/read_book/viewport.pyj
index 37565fda08..696c7fd5b2 100644
--- a/src/pyj/read_book/viewport.pyj
+++ b/src/pyj/read_book/viewport.pyj
@@ -79,14 +79,14 @@ class ScrollViewport:
         # document (body) co-ordinate system
         doc = doc or window.document
         topdoc = window.document
-        while doc is not topdoc:
+        while doc is not topdoc and doc.defaultView:
             # We are in a frame
             frame = doc.defaultView.frameElement
             rect = frame.getBoundingClientRect()
             x += rect.left
             y += rect.top
             doc = frame.ownerDocument
-        win = doc.defaultView
+        win = doc.defaultView or window
         wx, wy = win.pageXOffset, win.pageYOffset
         x += wx
         y += wy