angularjs - $scope.$apply after $scope.$on -


i using $broadcast pattern outlined here controllers listen service's state.

for example, here listen service's busy/unbusy state set mouse cursor. 

//our service function startrunning(){      $rootscope.$broadcast("busy");  } function stoprunning(){      $rootscope.$broadcast("unbusy");  }  //our controller $scope.$on("busy", function(){     $scope.state = "busy";  });   $scope.$on("unbusy", function(){     $scope.state = "ready" });

html

<div ng-controller = "myctrl" ng-state = "state"/>

css:

.busy{     cursor: wait;  }  .ready {     cursor:auto;  }

the problem cursor doesn't change immediately. requires me move mouse, imagine trigger $digest cycle, before cursor changes.

i can fix 

$scope.$apply($scope.state = "ready");

but throw up: 

error: [$rootscope:inprog] $digest in progress

errors.

what best way deal this?

edit: here's working jsfiddle: http://jsfiddle.net/hb7lu/23512/

the issue appears using non-angular timeout/asynchronous methods. (ie. issue doesn't appear if using $timeout, appear if using settimeout;


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