From 490db839fb08a9b461e77dbe0138c7e6045aacd8 Mon Sep 17 00:00:00 2001
From: Pierre Spring <pierre@nelm.io>
Date: Tue, 13 Jun 2017 18:22:08 +0200
Subject: [PATCH] Event: `stopPropagation()` on native event-handler

Fixes gh-3693
Close gh-3694
---
 src/event/trigger.js | 21 +++++++++++++++++----
 test/unit/event.js   | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+), 4 deletions(-)

diff --git a/src/event/trigger.js b/src/event/trigger.js
index ef391370f..c3b048026 100644
--- a/src/event/trigger.js
+++ b/src/event/trigger.js
@@ -10,18 +10,21 @@ define( [
 
 "use strict";
 
-var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
+var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+	stopPropagationCallback = function( e ) {
+		e.stopPropagation();
+	};
 
 jQuery.extend( jQuery.event, {
 
 	trigger: function( event, data, elem, onlyHandlers ) {
 
-		var i, cur, tmp, bubbleType, ontype, handle, special,
+		var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
 			eventPath = [ elem || document ],
 			type = hasOwn.call( event, "type" ) ? event.type : event,
 			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
 
-		cur = tmp = elem = elem || document;
+		cur = lastElement = tmp = elem = elem || document;
 
 		// Don't do events on text and comment nodes
 		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
@@ -93,7 +96,7 @@ jQuery.extend( jQuery.event, {
 		// Fire handlers on the event path
 		i = 0;
 		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
-
+			lastElement = cur;
 			event.type = i > 1 ?
 				bubbleType :
 				special.bindType || type;
@@ -136,7 +139,17 @@ jQuery.extend( jQuery.event, {
 
 					// Prevent re-triggering of the same event, since we already bubbled it above
 					jQuery.event.triggered = type;
+
+					if ( event.isPropagationStopped() ) {
+						lastElement.addEventListener( type, stopPropagationCallback );
+					}
+
 					elem[ type ]();
+
+					if ( event.isPropagationStopped() ) {
+						lastElement.removeEventListener( type, stopPropagationCallback );
+					}
+
 					jQuery.event.triggered = undefined;
 
 					if ( tmp ) {
diff --git a/test/unit/event.js b/test/unit/event.js
index 0c379d051..30e057a80 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -440,6 +440,47 @@ QUnit.test( "on bubbling, isDefaultPrevented, stopImmediatePropagation", functio
 	$anchor2[ 0 ].removeEventListener( "click", neverCallMe );
 } );
 
+QUnit.test( "triggered events stopPropagation() for natively-bound events", function( assert ) {
+	assert.expect( 1 );
+
+	var $button = jQuery( "#button" ),
+		$parent = $button.parent(),
+		neverCallMe = function() {
+			assert.ok( false, "propagation should have been stopped" );
+		},
+		stopPropagationCallback = function( e ) {
+			assert.ok( true, "propagation is stopped" );
+			e.stopPropagation();
+		};
+
+	$parent[ 0 ].addEventListener( "click", neverCallMe );
+	$button.on( "click", stopPropagationCallback );
+	$button.trigger( "click" );
+	$parent[ 0 ].removeEventListener( "click", neverCallMe );
+	$button.off( "click", stopPropagationCallback );
+} );
+
+QUnit.test( "trigger() works with events that were previously stopped", function( assert ) {
+	assert.expect( 0 );
+
+	var $button = jQuery( "#button" ),
+		$parent = $button.parent(),
+		neverCallMe = function() {
+			assert.ok( false, "propagation should have been stopped" );
+		};
+
+	$parent[ 0 ].addEventListener( "click", neverCallMe );
+	$button.on( "click", neverCallMe );
+
+	var clickEvent =  jQuery.Event( "click" );
+	clickEvent.stopPropagation();
+	$button.trigger( clickEvent );
+
+	$parent[ 0 ].removeEventListener( "click", neverCallMe );
+	$button.off( "click", neverCallMe );
+} );
+
+
 QUnit.test( "on(), iframes", function( assert ) {
 	assert.expect( 1 );
 
-- 
2.39.5