Event: Stop shimming focusin & focusout events

Latest versions of all browsers now implement focusin & focusout natively
and they all converged on a common event order so it doesn't make much sense
for us to normalize it to a different order anymore.

Note that it means we no longer guarantee that focusin fires before focus
and focusout before blur.

Fixes jquerygh-4300
Closes jquerygh-4362

README.md

@@ -92,8 +92,7 @@ Some example modules that can be excluded are:
 - **effects**: The `.animate()` method and its shorthands such as `.slideUp()` or `.hide("slow")`.
 - **event**: The `.on()` and `.off()` methods and all event functionality. Also removes `event/alias`.
 - **event/alias**: All event attaching/triggering shorthands like `.click()` or `.mouseover()`.
-- **event/focusin**: Cross-browser support for the focusin and focusout events.
-- **event/trigger**: The `.trigger()` and `.triggerHandler()` methods. Used by **alias** and **focusin** modules.
+- **event/trigger**: The `.trigger()` and `.triggerHandler()` methods. Used by the **alias** module.
 - **offset**: The `.offset()`, `.position()`, `.offsetParent()`, `.scrollLeft()`, and `.scrollTop()` methods.
 - **wrap**: The `.wrap()`, `.wrapAll()`, `.wrapInner()`, and `.unwrap()` methods.
 - **core/ready**: Exclude the ready module if you place your scripts at the end of the body. Any ready callbacks bound with `jQuery()` will simply be called immediately. However, `jQuery(document).ready()` will not be a function and `.on("ready", ...)` or similar will not be triggered.

src/jquery.js

@@ -11,7 +11,6 @@ define( [
 	"./queue/delay",
 	"./attributes",
 	"./event",
-	"./event/focusin",
 	"./manipulation",
 	"./manipulation/_evalUrl",
 	"./wrap",

test/unit/event.js

@@ -2946,39 +2946,62 @@ QUnit.test( "VML with special event handlers (trac-7071)", function( assert ) {
 	ns.remove();
 } );
 
-QUnit.test( "Check order of focusin/focusout events", function( assert ) {
-	assert.expect( 2 );
+QUnit.test( "focusout/focusin support", function( assert ) {
+	assert.expect( 6 );
+
+	var focus,
+		parent = jQuery( "<div>" ),
+		input = jQuery( "<input>" ),
+		inputExternal = jQuery( "<input>" );
 
-	var focus, blur,
-		input = jQuery( "#name" );
+	parent.append( input );
+	jQuery( "#qunit-fixture" ).append( parent ).append( inputExternal );
+
+	parent
+		.on( "focus", function() {
+			assert.ok( false, "parent: focus not fired" );
+		} )
+		.on( "focusin", function() {
+			assert.ok( true, "parent: focusin fired" );
+		} )
+		.on( "blur", function() {
+			assert.ok( false, "parent: blur not fired" );
+		} )
+		.on( "focusout", function() {
+			assert.ok( true, "parent: focusout fired" );
+		} );
 
 	input
 		.on( "focus", function() {
+			assert.ok( true, "element: focus fired" );
 			focus = true;
 		} )
 		.on( "focusin", function() {
-			assert.ok( !focus, "Focusin event should fire before focus does" );
-			focus = true;
+			assert.ok( true, "element: focusin fired" );
 		} )
 		.on( "blur", function() {
-			blur = true;
+			assert.ok( true, "parent: blur fired" );
 		} )
 		.on( "focusout", function() {
-			assert.ok( !blur, "Focusout event should fire before blur does" );
-			blur = true;
+			assert.ok( true, "element: focusout fired" );
 		} );
 
 	// gain focus
 	input.trigger( "focus" );
 
 	// then lose it
-	jQuery( "#search" ).trigger( "focus" );
+	inputExternal.trigger( "focus" );
 
 	// cleanup
+	parent.off();
 	input.off();
 
 	// DOM focus is unreliable in TestSwarm
-	if ( !focus ) {
+	if ( QUnit.isSwarm && !focus ) {
+		assert.ok( true, "GAP: Could not observe focus change" );
+		assert.ok( true, "GAP: Could not observe focus change" );
+		assert.ok( true, "GAP: Could not observe focus change" );
+		assert.ok( true, "GAP: Could not observe focus change" );
 		assert.ok( true, "GAP: Could not observe focus change" );
 		assert.ok( true, "GAP: Could not observe focus change" );
 	}

test/unit/support.js

@@ -66,7 +66,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -83,7 +82,6 @@ testIframe(
 				"clearCloneStyle": false,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": true,
 				"noCloneChecked": false,
 				"optSelected": false,
 				"pixelBoxStyles": true,
@@ -100,7 +98,6 @@ testIframe(
 				"clearCloneStyle": false,
 				"cors": false,
 				"createHTMLDocument": true,
-				"focusin": true,
 				"noCloneChecked": false,
 				"optSelected": false,
 				"pixelBoxStyles": true,
@@ -117,7 +114,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -134,7 +130,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -151,7 +146,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": false,
@@ -168,7 +162,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -185,7 +178,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -202,7 +194,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": true,
@@ -219,7 +210,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": false,
@@ -236,7 +226,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": false,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": false,
@@ -253,7 +242,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": false,
@@ -270,7 +258,6 @@ testIframe(
 				"clearCloneStyle": true,
 				"cors": true,
 				"createHTMLDocument": true,
-				"focusin": false,
 				"noCloneChecked": true,
 				"optSelected": true,
 				"pixelBoxStyles": false,