Controlgroup: Added option theme. Fixes #5301.

Author: jaspermdegroot

js/widgets/controlgroup.js

@@ -14,6 +14,7 @@ define( [ "jquery",
 
 $.widget( "mobile.controlgroup", $.mobile.widget, $.extend( {
 	options: {
+		theme: null,
 		shadow: false,
 		corners: true,
 		excludeInvisible: true,
@@ -55,6 +56,12 @@ $.widget( "mobile.controlgroup", $.mobile.widget, $.extend( {
 			this.refresh();
 		}
 
+		if ( o.theme !== undefined ) {
+			$el
+				.removeClass( "ui-group-theme-" + this.options.theme )
+				.addClass( "ui-group-theme-" + o.theme );
+		}
+
 		if ( o.corners !== undefined ) {
 			$el.toggleClass( "ui-corner-all", o.corners );
 		}