text: angular.module('material.components.tabs')
      .directive('mdTabScroll', MdTabScroll);
  function MdTabScroll($parse) {
      return {
          restrict: 'A',
          compile: function ($element, attr) {
              var fn = $parse(attr.mdTabScroll, null, true);
              return function ngEventHandler(scope, element) {
                  element.on('mousewheel', function (event) {
                      scope.$apply(function () {
                          fn(scope, { $event: event });
                      });
                  });
              };
          }
      }
  }
  