define(['jquery', 'backbone', 'underscore', 'models/Progress'], function($, Backbone, _, Progress) {
    'use strict';

    return Backbone.Collection.extend({

        model: Progress,

        comparator: function(progress) {
            return progress.get('eta');
        },

        initialize: function() {

        },

        // returns all progresses, that bit matches the given type
        // types have to be or'ed
        byType: function(types) {
            return this.filter(function(progress) {
                return (progress.get('type') & types) !== 0;
            });
        }

    });

});