edx-platform/lms/static/js/edxnotes/models/tab.js

// eslint-disable-next-line no-shadow-restricted-names
(function(define, undefined) {
    'use strict';

    define(['underscore', 'backbone', 'js/edxnotes/utils/logger'], function(_, Backbone, NotesLogger) {
        var TabModel = Backbone.Model.extend({
            defaults: {
                identifier: '',
                name: '',
                icon: '',
                is_active: false,
                is_closable: false,
                view: ''
            },

            initialize: function() {
                this.logger = NotesLogger.getLogger('tab');
            },

            activate: function() {
                this.collection.each(_.bind(function(model) {
                // Inactivate all other models.
                    if (model !== this) {
                        model.inactivate();
                    }
                }, this));
                this.set('is_active', true);
                this.logger.emit('edx.course.student_notes.notes_page_viewed', {
                    view: this.get('view')
                });
            },

            inactivate: function() {
                this.set('is_active', false);
            },

            isActive: function() {
                return this.get('is_active');
            }
        });

        return TabModel;
    });
}).call(this, define || RequireJS.define);