# HG changeset patch
# User Ian Neal <iann_cvs@blueyonder.co.uk>
# Date 1722959418 -3600
# Parent  e165f204a6f0e76c57468ad2a1d442a6a393acca
Bug 1911844 - Switch from boxObject to getBoundingClientRect in utilityOverlay. r=frg a=frg

diff --git a/suite/base/content/utilityOverlay.js b/suite/base/content/utilityOverlay.js
--- a/suite/base/content/utilityOverlay.js
+++ b/suite/base/content/utilityOverlay.js
@@ -934,18 +934,18 @@ function focusElement(aElement)
 
 function isElementVisible(aElement)
 {
   if (!aElement)
     return false;
 
   // If aElement or a direct or indirect parent is hidden or collapsed,
   // height, width or both will be 0.
-  var bo = aElement.boxObject;
-  return (bo.height > 0 && bo.width > 0);
+  var rect = aElement.getBoundingClientRect();
+  return rect.height > 0 && rect.width > 0;
 }
 
 function makeURLAbsolute(aBase, aUrl, aCharset)
 {
   // Construct nsIURL.
   return Services.io.newURI(aUrl, aCharset,
                             Services.io.newURI(aBase, aCharset)).spec;
 }