Get attached events for a child view in a composite view

childView

'use strict';

var Backbone = require('backbone');
var Marionette = require('backbone.marionette');
var $ = require('jquery');

var templateHelpers = require('../../../common/helpers/HandlebarsHelpers');
var template = require('../templates/PostCardTemplate.hbs');

module.exports = Backbone.Marionette.ItemView.extend({
    className: 'grid-element post-card',
    template: template,
    onRender: function() {
        
    },
});

compositeView

'use strict';

var Backbone = require('backbone');
var Marionette = require('backbone.marionette');
var $ = require('jquery');

var template = require('../templates/postsGridTemplate.hbs');
var ItemView = require('./PostCardView');
var clickEvent = (window.Modernizr.touch) ? 'touchend' : 'click';
var events = {};

events[clickEvent + ' @ui.moreItems'] = 'moreItem';

module.exports = Backbone.Marionette.CompositeView.extend({
    el: '.wrapper',
    template: template,
    ui: {
        moreItems: '#more-items'
    },
    events: events,
    childView: ItemView,
    childViewContainer: '.grid-wrapper',
    initialize: function() {
        console.log('initialize posts grid view');
        this.cpage = 0;
        this.total_pages = 1;

        this.listenTo(this.collection, 'success:fetch', this.render);
    },
    onRender: function(collection) {
        console.log('render post grid');
        this.gridBuildAnim();
    },
    gridBuildAnim: function() {
    
        var speed = 2000;
        var container =  $('.display-animation');
        
        container.each(function() {
            var elements = $(this).children();
            
            elements.each(function() {

                var elementOffset = $(this).offset();
                var offset = elementOffset.left*0.8 + elementOffset.top;
                var delay = parseFloat(offset/speed).toFixed(2);
                
                $(this)
                    .css("-webkit-animation-delay", delay+'s')
                    .css("-moz-animation-delay", delay+'s')
                    .css("-o-animation-delay", delay+'s')
                    .css("animation-delay", delay+'s')
                    .addClass('animated');
                    
            });
        });
    
    },
    onChildviewAttach: function() {
        console.log('attached');
    },
    moreItem: function(event){
        event.preventDefault();
        
        this.total_pages = this.collection.total_pages;
        this.cpage = this.collection.cpage;
        console.log('total_pages: ' + this.total_pages);
        console.log('cpage: ' + this.cpage);
        this.collection.loadMore();
    },
    animate: function(){
        console.log('load more');
    }
});