choiceOptions.js

var ChoiceOptionsView = TemplateView.extend({
  jst: 'JST.campaign_dialogue_states_choice_options',

  events: {
    'click .close': 'remove',
    // ...
  },

  initialize: function(options) {
    this.choice = options.choice;
    this.render();
  },

  render: function() {
    ChoiceOptionsView.__super__.render.call(this);
    // do popover stuff
  }
});

var ChoiceStateEditView = DialogueStateEditView.extend({
  // ...

  events: {
    // ...
    'click .choice .options': 'onChoiceOptionsClick'
  },

  // ...

  onChoiceOptionsClick: function(e) {
    var $choice = $(e.target).parent(),
        choice = this.state.endpoints.get($choice.attr('data-endpoint-id'));

    new ChoiceOptionsView({choice: choice});
  }

  // ...
});