YUI3, Modules, Namespaces, Calling Functions

Question

I would like to port javascript code from my page to YUI3. After reading a lot of posts (questions and answers) here and a lot of information on the YUI3 page and in the tutorials, I came to the conclusion that the best way to do this is to break the code in modules, since it allows me to dynamically load scripts only when necessary.

I would like to organize the code in different submodules, which should be loaded and managed (if necessary) using the main module.

I think I understood how to load them dynamically, but the problem that I have now is that I can not always call public methods both inside the module and form one module in another. Sometimes it works, but sometimes I get a message xxx is not a function.

Perhaps the question is that I don’t understand how to set a global namespace (for example MyApp) and “play” in that namespace.

I would like to be able to call methods as follows: MyApp.Tabs.detectTabs()... both from the methods of the main module ( MyApp.Core), and from the same submodule ( MyApp.Tabs).

Here is the structure of my code:

Built-in javascript:

var MyAppConfig = {
  "tabpanels":{"ids":["navigation"]},
  "events":   [{"ids": ["main_login", "dictionary_login"],
              "type": "click",
              "callback": "MyApp.Core.updateContent",
              "params":{
                 }
              }]
};
YUI_config = {
    filter: 'debug',
    groups: {
        'myapp': {
            modules: {
                'project-myapp-core': {
                    fullpath: 'http://www.myapp.com/scripts/Core.js',
                    requires: ['node-base']
                },
                'project-myapp-tabs': {
                    fullpath: 'http://www.myapp.com/scripts/Tabs.js',
                    requires: ['base', 'project-myapp-core', 'history', 'tabview', 'tabview-base']
                }
            }
        }
    }
};
YUI(YUI_config).use('node', 'base', 'project-myapp-core', function(Y) {
    var MyApp = {};
    MyApp.Core = new Y.MyApp.Core();
    Y.on('domready', MyApp.Core.begin, Y, null, application);
});

Module: Core
File: http://www.myapp.com/scripts/Core.js

YUI.add('project-myapp-core', function(Y) {

    function Core(config) {
        Core.superclass.constructor.apply(this, arguments);
    }
    Core.NAME = 'myapp-core';
    Core.ATTRS = {};

    var MyApp;
    MyApp = {};

    Y.extend(Core, Y.Base, {

        initializer: function (cfg) {
        },

        begin: function(e, MyAppConfig) {
            MyApp.Core      = instance = this;
            if (MyAppConfig.tabpanels) {
                YUI().use('node', 'project-myapp-tabs', function(Y) {
                    MyApp.Tabs = new Y.MyApp.Tabs();
                });
            }
            if (MyAppConfig.events) {
                MyApp.Core.prepareEvents(MyAppConfig.events);
                // I get "MyApp.Core.prepareEvents is not a function" 
            }
        },

        prepareEvents: function(e) {
        },

        updateContent: function() {
        }

    });

    Y.namespace('MyApp');
    Y.MyApp.Core = Core;

}, '0.0.1', { requires: ['node-base'] });

Submodule: tabs
File: http://www.myapp.com/scripts/Tabs.js

YUI.add('project-myapp-tabs', function(Y) {

    function Tabs(config) {
        Tabs.superclass.constructor.apply(this, arguments);
    }
    Tabs.NAME = 'myapp-tabs';
    Tabs.ATTRS = {};

    var tabView = [];

    Y.extend(Tabs, Y.Base, {

        initializer: function (cfg) {
        },

        begin: function (tabpanels) {
        },

        methodA: function () {
        }

    });

    Y.namespace('MyApp');
    Y.MyApp.Tabs = Tabs;

}, '0.0.1', { requires: ['base', 'project-myapp-core', 'history', 'tabview', 'tabview-base'] });

Where should I define global variables, namespace ...? How do I call functions?

Thanks in advance!

- Oriol -

Answer 1

project-myapps-tabs, YUI . JS:

YUI(YUI_config).use('node', 'base', 'project-myapp-tabs', function(Y) {