portainer/app/directives/onEnterKey.js

angular.module('portainer')
.directive('onEnterKey', [function porOnEnterKey() {
  var directive = {
    restrict: 'A',
    link: function(scope, element, attrs) {
      element.bind('keydown keypress', function (e) {
        if ( e.which === 13 ) {
          e.preventDefault();
          scope.$apply(function () {
            scope.$eval(attrs.onEnterKey);
          });
        }
      });
    }
  };

  return directive;
}]);