Button: use _hoverable for hover state management. Fixes #5295 - button doesn't remove hover state if they are disabled

(cherry picked from commit 8e1ceba)

Author: cgack

tests/unit/button/button_tickets.js

@@ -5,6 +5,17 @@
 
 module( "button: tickets" );
 
+test( "#5295 - button does not remove hoverstate if disabled" , function() {
+	expect( 1 );
+	var btn = $("#button").button();
+	btn.hover( function() {
+		btn.button( "disable" );
+	});
+	btn.trigger( "mouseenter" );
+	btn.trigger( "mouseleave" );
+	ok( !btn.is( ".ui-state-hover") );
+});
+
 test( "#5946 - buttonset should ignore buttons that are not :visible", function() {
 	expect( 2 );
 	$( "#radio01" ).next().andSelf().hide();

ui/jquery.ui.button.js

@@ -70,21 +70,22 @@ $.widget( "ui.button", {
 		var that = this,
 			options = this.options,
 			toggleButton = this.type === "checkbox" || this.type === "radio",
-			hoverClass = "ui-state-hover" + ( !toggleButton ? " ui-state-active" : "" ),
+			activeClass = !toggleButton ? "ui-state-active" : "",
 			focusClass = "ui-state-focus";
 
 		if ( options.label === null ) {
 			options.label = (this.type === "input" ? this.buttonElement.val() : this.buttonElement.html());
 		}
 
+		this._hoverable( this.buttonElement );
+
 		this.buttonElement
 			.addClass( baseClasses )
 			.attr( "role", "button" )
 			.bind( "mouseenter" + this.eventNamespace, function() {
 				if ( options.disabled ) {
 					return;
 				}
-				$( this ).addClass( "ui-state-hover" );
 				if ( this === lastActive ) {
 					$( this ).addClass( "ui-state-active" );
 				}
@@ -93,7 +94,7 @@ $.widget( "ui.button", {
 				if ( options.disabled ) {
 					return;
 				}
-				$( this ).removeClass( hoverClass );
+				$( this ).removeClass( activeClass );
 			})
 			.bind( "click" + this.eventNamespace, function( event ) {
 				if ( options.disabled ) {