Core: Move tabbable into its own module

Ref #9647

1 files changed, 35 insertions, 0 deletions

diff --git a/ui/tabbable.js b/ui/tabbable.js
new file mode 100644
index 000000000..86bebb77b
--- /dev/null
+++ b/ui/tabbable.js
@@ -0,0 +1,35 @@
+/*!
+ * jQuery UI Tabbable @VERSION
+ * http://jqueryui.com
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license.
+ * http://jquery.org/license
+ */
+
+//>>label: focusable
+//>>group: Core
+//>>description: Selects elements which can be tabbed to.
+//>>docs: http://api.jqueryui.com/tabbable-selector/
+
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "jquery", "./version", "./focusable" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery );
+	}
+} ( function( $ ) {
+
+return $.extend( $.expr[ ":" ], {
+	tabbable: function( element ) {
+		var tabIndex = $.attr( element, "tabindex" ),
+			hasTabindex = tabIndex != null;
+		return ( !hasTabindex || tabIndex >= 0 ) && $.ui.focusable( element, hasTabindex );
+	}
+} );
+
+} ) );