gistfile1.js

.controller('ComparisonCtrl', ['$scope', '$rootScope', function($scope, $rootScope) {
  var get_content_value_set = function()
  {
    return $scope.events[$scope.event.key].segments[$scope.segment_index].conditions[$scope.condition.key].content_value_set;
  }

  var clear_empty_sets = function()
  {
    if (find_comparison_set_by_value('').set != null)
    {
      $scope.events[$scope.event.key].segments[$scope.segment_index].conditions[$scope.condition.key].content_value_set = [];
    }
  }
  var find_comparison_set_by_value = function(value)
  {
    var index = -1;
    var found_set = null;
    $.each(get_content_value_set(), function(i, set)
    {
      if (set[0] == value) {
        found_set = set;
        index = i;
      }
    });
    return {index: index, set: found_set};
  }
  clear_empty_sets();
  var set_result = find_comparison_set_by_value($scope.comparsion_value.id)

  $scope.comparison_checked = set_result.set != null;
  $scope.get_set_index = function() {
    return find_comparison_set_by_value($scope.comparsion_value.id).index;
  }
  $scope.$on('update_index_needed', function() {
    $scope.set_index = $scope.get_set_index();
  })
  $scope.comparison_check_changed = function() {
    if ($scope.comparison_checked)
    {
      var current_length = get_content_value_set().length;
      $scope.set_index = current_length;
      get_content_value_set().push([$scope.comparsion_value.id,'',''])

    }
    else
    {
      var set_result = find_comparison_set_by_value($scope.comparsion_value.id);
      if (set_result.set != null)
      {
        get_content_value_set().splice(set_result.index, 1)
        $rootScope.$broadcast('update_index_needed')
      }
    }
  }
}])