From e4218ca10b333e530b4c4e8023f375f79e029a3c Mon Sep 17 00:00:00 2001
From: Oleg Gaidarenko <markelog@gmail.com>
Date: Fri, 13 Nov 2015 14:54:25 +0300
Subject: [PATCH] Revert "Offset: remove ownerDocument check in offset getter"

This reverts commit 6176567361e9d05d4f5eb7e98735a678f2cd7ea9.
---
 src/offset.js       | 12 +++++-------
 test/unit/offset.js |  9 +++++++++
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/offset.js b/src/offset.js
index f7ef79c3c..c185c1c3b 100644
--- a/src/offset.js
+++ b/src/offset.js
@@ -74,8 +74,6 @@ jQuery.offset = {
 
 jQuery.fn.extend( {
 	offset: function( options ) {
-
-		// Preserve chaining for setter
 		if ( arguments.length ) {
 			return options === undefined ?
 				this :
@@ -84,8 +82,9 @@ jQuery.fn.extend( {
 				} );
 		}
 
-		var docElem, win, rect, doc,
-			elem = this[ 0 ];
+		var docElem, win, rect,
+			elem = this[ 0 ],
+			doc = elem && elem.ownerDocument;
 
 		if ( !elem ) {
 			return;
@@ -100,9 +99,8 @@ jQuery.fn.extend( {
 
 		rect = elem.getBoundingClientRect();
 
-		// Make sure element is not hidden (display: none)
-		if ( rect.width || rect.height ) {
-			doc = elem.ownerDocument;
+		// Make sure element is not hidden (display: none) or disconnected
+		if ( rect.width || rect.height || elem.getClientRects().length ) {
 			win = getWindow( doc );
 			docElem = doc.documentElement;
 
diff --git a/test/unit/offset.js b/test/unit/offset.js
index a0f253b4e..a4822e4a9 100644
--- a/test/unit/offset.js
+++ b/test/unit/offset.js
@@ -48,6 +48,15 @@ QUnit.test( "empty set", function( assert ) {
 	assert.strictEqual( jQuery().position(), undefined, "position() returns undefined for empty set (#11962)" );
 } );
 
+QUnit.test( "object without getBoundingClientRect", function( assert ) {
+	assert.expect( 2 );
+
+	// Simulates a browser without gBCR on elements, we just want to return 0,0
+	var result = jQuery({ ownerDocument: document }).offset();
+	assert.equal( result.top, 0, "Check top" );
+	assert.equal( result.left, 0, "Check left" );
+});
+
 QUnit.test( "disconnected element", function( assert ) {
 	assert.expect( 2 );
 
-- 
2.39.5