portainer/app/directives/autofocus.js

angular
.module('portainer')
.directive('autoFocus', ['$timeout', function porAutoFocus($timeout) {
  var directive = {
    restrict: 'A',
    link: function($scope, $element) {
      $timeout(function() {
        $element[0].focus();
      });
    }
  };

  return directive;
}]);