Listen to window events in an Angularjs service

Question

I want to listen to the window events in my AngularJS service so that I can broadcast them to my controllers.

I have a Chrome extension which sends any message using

Answer 1

Here is working example I've made - with subscribing DOM event and broadcasting the event from service to controller: http://plnkr.co/edit/nk2aPt?p=preview

//this is service that creates subscription    
app.service('serviceName', function($window, $rootScope) {

      function subsFunc() {
        $window.addEventListener('click', function(e) {
          $rootScope.$broadcast('app.clickEvent', e);
        })
      }

      return {
        "subscribeMe": subsFunc      }
    });

//this will be in controller
  $rootScope.$on('app.clickEvent', function(a, b) {
    //a,b - event object details
  });

Answer 2

Do you inject that service somewhere? Services will run only if you really injects them.

Additionally, it's better to use $window instead of window, so you'll be able to mock it later in your tests.

Answer 3

Something like this might help:

var app = angular.module('app', []);

app.run(["$window", "$rootScope", function($window, $rootScope) {

    $window.addEventListener('message', function(e) {

        $rootScope.$broadcast('message', e.data);
    });
} ]);

Answer 4

Problem:

"$window listener" listen multiple time. 

Example:

Consider , we wrote a listener code in Page B. My starting page is Page A.

I added an alert in listener code in Page B.

$window.addEventListener('message', function (e) { alert() }); 

Lets Go,

• Page A >> Page B (alert count 1) Page B >> Page A >> Page B (alert count 2) Page B >> Page A >> Page B (alert count 3)