All: Drop support for IE & some other browsers (but mostly IE)

Closes gh-2249

Author: mgol

Diff for: demos/autocomplete/maxheight.html

@@ -13,12 +13,6 @@
 		/* prevent horizontal scrollbar */
 		overflow-x: hidden;
 	}
-	/* IE 6 doesn't support max-height
-	 * we use height instead, but this forces the menu to always be this tall
-	 */
-	* html .ui-autocomplete {
-		height: 100px;
-	}
 	</style>
 	<script src="../../external/requirejs/require.js"></script>
 	<script src="../bootstrap.js">

Diff for: demos/bootstrap.js

@@ -2,9 +2,7 @@
 ( function() {
 "use strict";
 
-// Find the script element
-var scripts = document.getElementsByTagName( "script" );
-var script = scripts[ scripts.length - 1 ];
+var script = document.currentScript;
 
 // Read the modules
 var modules = script.getAttribute( "data-modules" );

Diff for: demos/tooltip/custom-style.html

@@ -60,8 +60,6 @@
 		width: 25px;
 		height: 25px;
 		box-shadow: 6px 5px 9px -9px black;
-		-webkit-transform: rotate(45deg);
-		-ms-transform: rotate(45deg);
 		transform: rotate(45deg);
 	}
 	.arrow.top:after {

Diff for: tests/lib/qunit-assert-domequal.js

@@ -83,17 +83,6 @@ function getElementStyles( elem ) {
 		key = style[ len ];
 		camelKey = camelCase( key );
 
-		// Support: IE <=11+
-		// In IE, `option` elements may have different initial `option` colors.
-		// They may initially all be transparent, but later the selected
-		// option gets a blue background with white text; ignore it.
-		if ( document.documentMode && elem.nodeName.toLowerCase() === "option" && (
-			camelKey === "color" ||
-				camelKey.indexOf( "Color" ) === camelKey.length - "Color".length
-		) ) {
-			continue;
-		}
-
 		if ( typeof style[ key ] === "string" ) {
 			styles[ camelKey ] = style[ key ];
 		}

Diff for: tests/lib/vendor/qunit-composite/qunit-composite.js

@@ -35,9 +35,6 @@ function addEvent( elem, type, fn ) {
 	if ( elem.addEventListener ) {
 		// Standards-based browsers
 		elem.addEventListener( type, fn, false );
-	} else if ( elem.attachEvent ) {
-		// support: IE <9
-		elem.attachEvent( "on" + type, fn );
 	}
 }
 

Diff for: tests/unit/autocomplete/events.js

@@ -75,11 +75,7 @@ $.each( [
 			assert.ok( menu.is( ":visible" ), "menu is visible after delay" );
 			element.simulate( "keydown", { keyCode: $.ui.keyCode.DOWN } );
 			element.simulate( "keydown", { keyCode: $.ui.keyCode.ENTER } );
-
-			// Blur must be async for IE to handle it properly
-			setTimeout( function() {
-				element.simulate( "blur" );
-			} );
+			element.simulate( "blur" );
 		} );
 	} );
 } );

Diff for: tests/unit/button/core.js

@@ -2,7 +2,6 @@ define( [
 	"qunit",
 	"jquery",
 	"lib/helper",
-	"ui/safe-active-element",
 	"ui/widgets/button"
 ], function( QUnit, $, helper ) {
 "use strict";
@@ -17,10 +16,10 @@ QUnit.test( "Disabled button loses focus", function( assert ) {
 	element.trigger( "focus" );
 	setTimeout( function() {
 
-		assert.equal( element[ 0 ], $.ui.safeActiveElement( document ), "Button is focused" );
+		assert.equal( element[ 0 ], document.activeElement, "Button is focused" );
 
 		element.button( "disable" );
-		assert.notEqual( element[ 0 ], $.ui.safeActiveElement( document ), "Button has had focus removed" );
+		assert.notEqual( element[ 0 ], document.activeElement, "Button has had focus removed" );
 		ready();
 	} );
 } );

Diff for: tests/unit/checkboxradio/core.js

@@ -33,7 +33,6 @@ QUnit.test( "Radios - Initial class structure", function( assert ) {
 } );
 
 QUnit.test( "Ensure checked after single click on checkbox label button", function( assert ) {
-	var ready = assert.async();
 	assert.expect( 2 );
 
 	$( "#check2" ).checkboxradio().on( "change", function() {
@@ -43,14 +42,7 @@ QUnit.test( "Ensure checked after single click on checkbox label button", functi
 		assert.hasClasses( label, "ui-state-active" );
 	} );
 
-	// Support: Opera
-	// Opera doesn't trigger a change event when this is done synchronously.
-	// This seems to be a side effect of another test, but until that can be
-	// tracked down, this delay will have to do.
-	setTimeout( function() {
-		$( "#check2" ).checkboxradio( "widget" ).simulate( "click" );
-		ready();
-	} );
+	$( "#check2" ).checkboxradio( "widget" ).simulate( "click" );
 } );
 
 QUnit.test( "Handle form association via form attribute", function( assert ) {

Diff for: tests/unit/core/core.js

@@ -3,7 +3,6 @@ define( [
 	"jquery",
 	"lib/common",
 	"lib/helper",
-	"ui/form",
 	"ui/labels",
 	"ui/unique-id"
 ], function( QUnit, $, common, helper ) {
@@ -150,10 +149,6 @@ QUnit.test( "Labels", function( assert ) {
 	function testLabels( testType ) {
 		var labels = dom.find( "#test" ).labels();
 		var found = labels.map( function() {
-
-				// Support: Core 1.9 Only
-				// We use String.prototype.trim because core 1.9.x silently fails
-				// when white space is present
 				return String.prototype.trim.call( $( this ).text() );
 			} ).get();
 
@@ -183,7 +178,7 @@ QUnit.test( "Labels", function( assert ) {
 			QUnit.test( name + this.id.replace( /_/g, " " ), function( assert ) {
 				var ready = assert.async();
 				assert.expect( 1 );
-				var form = input._form();
+				var form = $( input.prop( "form" ) );
 
 				// If input has a form the value should reset to "" if not it should be "changed"
 				var value = form.length ? "" : "changed";

Diff for: tests/unit/datepicker/core.js

@@ -311,9 +311,6 @@ QUnit.test( "customStructure", function( assert ) {
 		} );
 	}
 
-	// TODO: figure out why this setTimeout is needed in IE,
-	// it only is necessary when the previous baseStructure tests runs first
-	// Support: IE
 	setTimeout( step1 );
 } );