module.directive('form', function() {
        return {
            restrict: 'E',
            require: '?form',
            link: function(scope, element, attrs, formCtrl) {
                // No form controller
                if (!formCtrl) {
                    return;
                }

                // Set $submitted default
                formCtrl.$submitted = false;

                // Unset $submitted when $setPristine called
                var $setPristine = formCtrl.$setPristine;
                formCtrl.$setPristine = function() {
                    scope.$evalAsync(function() {
                        formCtrl.$submitted = false;
                        $setPristine.apply(formCtrl, arguments);
                    });
                };

                // Set $submitted when the form is submitted
                element.on('submit', function() {
                    scope.$evalAsync(function() {
                        formCtrl.$submitted = true;
                    });
                });
            }
        };
    });