session-desktop/js/views/new_group_update_view.js

(function() {
  'use strict';
  window.Whisper = window.Whisper || {};

  Whisper.NewGroupUpdateView = Whisper.View.extend({
    tagName: 'div',
    className: 'new-group-update',
    templateName: 'new-group-update',
    initialize: function(options) {
      this.render();
      this.avatarInput = new Whisper.FileInputView({
        el: this.$('.group-avatar'),
        window: options.window,
      });

      this.recipients_view = new Whisper.RecipientsInputView();
      this.listenTo(this.recipients_view.typeahead, 'sync', function() {
        this.model.contactCollection.models.forEach(
          function(model) {
            if (this.recipients_view.typeahead.get(model)) {
              this.recipients_view.typeahead.remove(model);
            }
          }.bind(this)
        );
      });
      this.recipients_view.$el.insertBefore(this.$('.container'));

      this.member_list_view = new Whisper.ContactListView({
        collection: this.model.contactCollection,
        className: 'members',
      });
      this.member_list_view.render();
      this.$('.scrollable').append(this.member_list_view.el);
    },
    events: {
      'click .back': 'goBack',
      'click .send': 'send',
      'focusin input.search': 'showResults',
      'focusout input.search': 'hideResults',
    },
    hideResults: function() {
      this.$('.results').hide();
    },
    showResults: function() {
      this.$('.results').show();
    },
    goBack: function() {
      this.trigger('back');
    },
    render_attributes: function() {
      return {
        name: this.model.getTitle(),
        avatar: this.model.getAvatar(),
      };
    },
    send: function() {
      return this.avatarInput.getThumbnail().then(
        function(avatarFile) {
          var now = Date.now();
          var attrs = {
            timestamp: now,
            active_at: now,
            name: this.$('.name').val(),
            members: _.union(
              this.model.get('members'),
              this.recipients_view.recipients.pluck('id')
            ),
          };
          if (avatarFile) {
            attrs.avatar = avatarFile;
          }
          this.model.set(attrs);
          var group_update = this.model.changed;
          this.model.save();

          if (group_update.avatar) {
            this.model.trigger('change:avatar');
          }

          this.model.updateGroup(group_update);
          this.goBack();
        }.bind(this)
      );
    },
  });
})();