javascript - Reset Angular Countdown Directive -

i have countdown directive counting down initial value that's in element 0 once modal warns user session timeout. once countdown reaches 0 user prompted modal either exit, or continue. if hit continue, if same session expiration warning modal, counter 0. can't quite figure out how reset counter directive without returning , stopping on future warnings. here's code have now.

.directive("ndcountdown", function($timeout, $compile){     return{         restrict: 'a',         link: function(scope, element, attrs){             var countdown = function(){                 var timer = element.find('strong');                 for(var = 0; < timer.length; i++){                     var secs = parseint(timer.text(), 10) - 1;                     if(secs >= 0){                         timer.text(secs);                     } else{                         //reset element original value                         //stop timeout in session have continue                          //work in future dialogs.                     }                 }                 $timeout(countdown, 1000);             }             countdown();         }     } }); 

first step save variable of inside originally. run timeout if not @ end.

.directive("ndcountdown", function($timeout, $compile){ return{     restrict: 'a',     link: function(scope, element, attrs){         var timer = element.find('strong'),             max   = parseint(timer.text());         var countdown = function(){             for(var = 0; < timer.length; i++){                 var secs = parseint(timer.text(), 10) - 1;                 if(secs >= 0){                     timer.text(secs);                     $timeout(countdown, 1000);                 } else{                     timer.text(max);                 }             }         }         countdown();     } } }); 

now if needed able restart it, want communicate controller. maybe $broadcast this. be sure inject $rootscope

$rootscope.$broadcast('event:start-countdown'); 

then in directive add @ end of link function, , inject $rootscope. again.

$rootscope.$on('event:start-countdown', function() {     countdown(); }