Core: Fix JQMIGRATE warning about jQuery.expr[":"]

This commit polyfills `jQuery.expr.pseudos` for old versions of jQuery.

Fixes #15185
Closes gh-1773

Author: eirslett

ui/data.js

@@ -23,7 +23,7 @@
 		factory( jQuery );
 	}
 } ( function( $ ) {
-return $.extend( $.expr[ ":" ], {
+return $.extend( $.expr.pseudos, {
 	data: $.expr.createPseudo ?
 		$.expr.createPseudo( function( dataName ) {
 			return function( elem ) {

ui/focusable.js

@@ -73,7 +73,7 @@ function visible( element ) {
 	return visibility !== "hidden";
 }
 
-$.extend( $.expr[ ":" ], {
+$.extend( $.expr.pseudos, {
 	focusable: function( element ) {
 		return $.ui.focusable( element, $.attr( element, "tabindex" ) != null );
 	}

ui/jquery-1-7.js

@@ -1,5 +1,5 @@
 /*!
- * jQuery UI Support for jQuery core 1.7.x @VERSION
+ * jQuery UI Support for jQuery core 1.7.x and newer @VERSION
  * http://jqueryui.com
  *
  * Copyright jQuery Foundation and other contributors
@@ -86,4 +86,16 @@ if ( $.fn.jquery.substring( 0, 3 ) === "1.7" ) {
 	};
 }
 
+// Support: jQuery 1.9.x or older
+// $.expr[ ":" ] is deprecated.
+if ( !$.expr.pseudos ) {
+	$.expr.pseudos = $.expr[ ":" ];
+}
+
+// Support: jQuery 1.11.x or older
+// $.unique has been renamed to $.uniqueSort
+if ( !$.uniqueSort ) {
+	$.uniqueSort = $.unique;
+}
+
 } ) );

ui/tabbable.js

@@ -24,7 +24,7 @@
 	}
 } ( function( $ ) {
 
-return $.extend( $.expr[ ":" ], {
+return $.extend( $.expr.pseudos, {
 	tabbable: function( element ) {
 		var tabIndex = $.attr( element, "tabindex" ),
 			hasTabindex = tabIndex != null;

ui/widget.js

@@ -65,7 +65,7 @@ $.widget = function( name, base, prototype ) {
 	}
 
 	// Create selector for plugin
-	$.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
+	$.expr.pseudos[ fullName.toLowerCase() ] = function( elem ) {
 		return !!$.data( elem, fullName );
 	};
 
@@ -517,7 +517,7 @@ $.Widget.prototype = {
 				current = that.classesElementLookup[ classes[ i ] ] || $();
 				if ( options.add ) {
 					bindRemoveEvent();
-					current = $( $.unique( current.get().concat( options.element.get() ) ) );
+					current = $( $.uniqueSort( current.get().concat( options.element.get() ) ) );
 				} else {
 					current = $( current.not( options.element ).get() );
 				}

ui/widgets/controlgroup.js

@@ -150,7 +150,7 @@ return $.widget( "ui.controlgroup", {
 				} );
 		} );
 
-		this.childWidgets = $( $.unique( childWidgets ) );
+		this.childWidgets = $( $.uniqueSort( childWidgets ) );
 		this._addClass( this.childWidgets, "ui-controlgroup-item" );
 	},
 

ui/widgets/tabs.js

@@ -96,7 +96,7 @@ $.widget( "ui.tabs", {
 		// Take disabling tabs via class attribute from HTML
 		// into account and update option properly.
 		if ( $.isArray( options.disabled ) ) {
-			options.disabled = $.unique( options.disabled.concat(
+			options.disabled = $.uniqueSort( options.disabled.concat(
 				$.map( this.tabs.filter( ".ui-state-disabled" ), function( li ) {
 					return that.tabs.index( li );
 				} )