Fix #14180. Allow cross-frame use of focusin/out. Close gh-1369.

(cherry picked from commit ebdb467761d756d4e52608a0df4a4d9b17da8092)
(conflicts with .data() resolved manually)

1 files changed, 16 insertions, 7 deletions

diff --git a/src/event.js b/src/event.js
index 2ca50aba4..3f19bab30 100644
--- a/src/event.js
+++ b/src/event.js
@@ -892,21 +892,30 @@ if ( !support.changeBubbles ) {
 if ( !support.focusinBubbles ) {
 	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
 
-		// Attach a single capturing handler while someone wants focusin/focusout
-		var attaches = 0,
-			handler = function( event ) {
+		// Attach a single capturing handler on the document while someone wants focusin/focusout
+		var handler = function( event ) {
 				jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
 			};
 
 		jQuery.event.special[ fix ] = {
 			setup: function() {
-				if ( attaches++ === 0 ) {
-					document.addEventListener( orig, handler, true );
+				var doc = this.ownerDocument,
+					attaches = jQuery._data( doc, fix );
+
+				if ( !attaches ) {
+					doc.addEventListener( orig, handler, true );
 				}
+				jQuery._data( doc, fix, ( attaches || 0 ) + 1 );
 			},
 			teardown: function() {
-				if ( --attaches === 0 ) {
-					document.removeEventListener( orig, handler, true );
+				var doc = this.ownerDocument,
+					attaches = jQuery._data( doc, fix ) - 1;
+
+				if ( !attaches ) {
+					doc.removeEventListener( orig, handler, true );
+					jQuery._removeData( doc, fix );
+				} else {
+					jQuery._data( doc, fix, attaches );
 				}
 			}
 		};