text: /**
   * Provides an easy way to toggle a checkboxes indeterminate property
   *
   * @example <input type="checkbox" ui-indeterminate="isUnkown">
   */
  angular.module('ui.indeterminate',[]).directive('uiIndeterminate', [
    function () {
      'use strict';
  
      return {
        compile: function(tElm, tAttrs) {
          if (!tAttrs.type || tAttrs.type.toLowerCase() !== 'checkbox') {
            return angular.noop;
          }
  
          return function ($scope, elm, attrs) {
            $scope.$watch(attrs.uiIndeterminate, function(newVal) {
              elm[0].indeterminate = !!newVal;
            });
          };
        }
      };
    }]);
  