/**
+ * @class Ext.app.Application
+ * @constructor
+ *
+ * Represents an Ext JS 4 application, which is typically a single page app using a {@link Ext.container.Viewport Viewport}.
+ * A typical Ext.app.Application might look like this:
+ *
+ * Ext.application({
+ name: 'MyApp',
+ launch: function() {
+ Ext.create('Ext.container.Viewport', {
+ items: {
+ html: 'My App'
+ }
+ });
+ }
+ });
+ *
+ * This does several things. First it creates a global variable called 'MyApp' - all of your Application's classes (such
+ * as its Models, Views and Controllers) will reside under this single namespace, which drastically lowers the chances
+ * of colliding global variables.
+ *
+ * When the page is ready and all of your JavaScript has loaded, your Application's {@link #launch} function is called,
+ * at which time you can run the code that starts your app. Usually this consists of creating a Viewport, as we do in
+ * the example above.
+ *
+ * <u>Telling Application about the rest of the app</u>
+ *
+ * Because an Ext.app.Application represents an entire app, we should tell it about the other parts of the app - namely
+ * the Models, Views and Controllers that are bundled with the application. Let's say we have a blog management app; we
+ * might have Models and Controllers for Posts and Comments, and Views for listing, adding and editing Posts and Comments.
+ * Here's how we'd tell our Application about all these things:
+ *
+ * Ext.application({
+ name: 'Blog',
+ models: ['Post', 'Comment'],
+ controllers: ['Posts', 'Comments'],
+
+ launch: function() {
+ ...
+ }
+ });
+ *
+ * Note that we didn't actually list the Views directly in the Application itself. This is because Views are managed by
+ * Controllers, so it makes sense to keep those dependencies there. The Application will load each of the specified
+ * Controllers using the pathing conventions laid out in the <a href="../guide/application_architecture">application
+ * architecture guide</a> - in this case expecting the controllers to reside in app/controller/Posts.js and
+ * app/controller/Comments.js. In turn, each Controller simply needs to list the Views it uses and they will be
+ * automatically loaded. Here's how our Posts controller like be defined:
+ *
+ * Ext.define('MyApp.controller.Posts', {
+ extend: 'Ext.app.Controller',
+ views: ['posts.List', 'posts.Edit'],
+
+ //the rest of the Controller here
+ });
+ *
+ * Because we told our Application about our Models and Controllers, and our Controllers about their Views, Ext JS will
+ * automatically load all of our app files for us. This means we don't have to manually add script tags into our html
+ * files whenever we add a new class, but more importantly it enables us to create a minimized build of our entire
+ * application using the Ext JS 4 SDK Tools.
+ *
+ * For more information about writing Ext JS 4 applications, please see the <a href="../guide/application_architecture">
+ * application architecture guide</a>.
+ *
+ * @markdown
+ * @docauthor Ed Spencer
+ */
+Ext.define('Ext.app.Application', {
+ extend: 'Ext.app.Controller',
+
+ requires: [
+ 'Ext.ModelManager',
+ 'Ext.data.Model',
+ 'Ext.data.StoreManager',
+ 'Ext.tip.QuickTipManager',
+ 'Ext.ComponentManager',
+ 'Ext.app.EventBus'
+ ],
+
+ /**
+ * @cfg {Object} name The name of your application. This will also be the namespace for your views, controllers
+ * models and stores. Don't use spaces or special characters in the name.
+ */
+
+ /**
+ * @cfg {Object} scope The scope to execute the {@link #launch} function in. Defaults to the Application
+ * instance.
+ */
+ scope: undefined,
+
+ /**
+ * @cfg {Boolean} enableQuickTips True to automatically set up Ext.tip.QuickTip support (defaults to true)
+ */
+ enableQuickTips: true,
+
+ /**
+ * @cfg {String} defaultUrl When the app is first loaded, this url will be redirected to. Defaults to undefined
+ */
+
+ /**
+ * @cfg {String} appFolder The path to the directory which contains all application's classes.
+ * This path will be registered via {@link Ext.Loader#setPath} for the namespace specified in the {@link #name name} config.
+ * Defaults to 'app'
+ */
+ appFolder: 'app',
+
+ /**
+ * @cfg {Boolean} autoCreateViewport Automatically loads and instantiates AppName.view.Viewport before firing the launch function.
+ */
+ autoCreateViewport: true,
+
+ constructor: function(config) {
+ config = config || {};
+ Ext.apply(this, config);
+
+ var requires = config.requires || [];
+
+ Ext.Loader.setPath(this.name, this.appFolder);
+
+ if (this.paths) {
+ Ext.Object.each(this.paths, function(key, value) {
+ Ext.Loader.setPath(key, value);
+ });
+ }
+
+ this.callParent(arguments);
+
+ this.eventbus = Ext.create('Ext.app.EventBus');
+
+ var controllers = this.controllers,
+ ln = controllers.length,
+ i, controller;
+
+ this.controllers = Ext.create('Ext.util.MixedCollection');
+
+ if (this.autoCreateViewport) {
+ requires.push(this.getModuleClassName('Viewport', 'view'));
+ }
+
+ for (i = 0; i < ln; i++) {
+ requires.push(this.getModuleClassName(controllers[i], 'controller'));
+ }
+
+ Ext.require(requires);
+
+ Ext.onReady(function() {
+ for (i = 0; i < ln; i++) {
+ controller = this.getController(controllers[i]);
+ controller.init(this);
+ }
+
+ this.onBeforeLaunch.call(this);
+ }, this);
+ },
+
+ control: function(selectors, listeners, controller) {
+ this.eventbus.control(selectors, listeners, controller);
+ },
+
+ /**
+ * Called automatically when the page has completely loaded. This is an empty function that should be
+ * overridden by each application that needs to take action on page load
+ * @property launch
+ * @type Function
+ * @param {String} profile The detected {@link #profiles application profile}
+ * @return {Boolean} By default, the Application will dispatch to the configured startup controller and
+ * action immediately after running the launch function. Return false to prevent this behavior.
+ */
+ launch: Ext.emptyFn,
+
+ /**
+ * @private
+ */
+ onBeforeLaunch: function() {
+ if (this.enableQuickTips) {
+ Ext.tip.QuickTipManager.init();
+ }
+
+ if (this.autoCreateViewport) {
+ this.getView('Viewport').create();
+ }
+
+ this.launch.call(this.scope || this);
+ this.launched = true;
+ this.fireEvent('launch', this);
+
+ this.controllers.each(function(controller) {
+ controller.onLaunch(this);
+ }, this);
+ },
+
+ getModuleClassName: function(name, type) {
+ var namespace = Ext.Loader.getPrefix(name);
+
+ if (namespace.length > 0 && namespace !== name) {
+ return name;
+ }
+
+ return this.name + '.' + type + '.' + name;
+ },
+
+ getController: function(name) {
+ var controller = this.controllers.get(name);
+
+ if (!controller) {
+ controller = Ext.create(this.getModuleClassName(name, 'controller'), {
+ application: this,
+ id: name
+ });
+
+ this.controllers.add(controller);
+ }
+
+ return controller;
+ },
+
+ getStore: function(name) {
+ var store = Ext.StoreManager.get(name);
+
+ if (!store) {
+ store = Ext.create(this.getModuleClassName(name, 'store'), {
+ storeId: name
+ });
+ }
+
+ return store;
+ },
+
+ getModel: function(model) {
+ model = this.getModuleClassName(model, 'model');
+
+ return Ext.ModelManager.getModel(model);
+ },
+
+ getView: function(view) {
+ view = this.getModuleClassName(view, 'view');
+
+ return Ext.ClassManager.get(view);
+ }
+});
+