scope.safeApply

angular.module('Scope.safeApply', [])
    .run(['$rootScope', function ($rootScope) {

        $rootScope.$safeApply = function () {
        
            var fn, phase = this.$root.$$phase;
            
            if (arguments.length == 1) {
                fn = arguments[0];
            } else {
                fn = arguments[1];
            }
            if (phase == '$apply' || phase == '$digest') {
                if (fn && (typeof(fn) === 'function')) {
                    fn();
                }
            } else {
                this.$apply(fn);
            }

        };

    }]);