Appcelerator Alloy | Using a common library that can access multiple Alloy views

home1.js

var HomeLibrary = require('home_library');

// HomeController is the name that will be used inside
// the XML view to access the methods of the library
var HomeController = new HomeLibrary('home1', $);

home1.xml

<Alloy>
	<Window id="home" backgroundColor="yellow">
  		<Label id="mylabel" top="30">Home 1</Label>
  		<Button id="mybutton" onClick="HomeController.button" top="60">Click</Button>
  		<Button id="close" onClick="HomeController.close" top="90">Close</Button>
  	</Window>
</Alloy>

home2.js

var HomeLibrary = require('home_library');

var HomeController = new HomeLibrary('home2', $);

home2.xml

<Alloy>
	<Window id="home" backgroundColor="pink">
  		<Label id="mylabel" top="30">Home 2</Label>
  		<Button id="close" onClick="HomeController.close" top="60">Close</Button>
  		
  	</Window>
</Alloy>

home_library.js

//
// NOTE: this file is in the /lib/ directory
//

var $ = null; // redefine the $, so that we use the specific subview UI elements
var controller = null;

// Constructor
function HomeLibrary(_controller, _$) {
  // TODO should make sure that the parameters are passed
	$ = _$; // replace the $
	controller = _controller; // get the controller name
}

// This function will be used in the view home1.xml only
HomeLibrary.prototype.button = function() {
	alert('Clicked!');
};

// This function will be used by both views
HomeLibrary.prototype.close = function() {
  // since $ is redefined, we can access the UI views as usual
	$.home.close();
};

module.exports = HomeLibrary;

index.js

$.index.open();

// open the controller home1
function open1() {
	var home = Alloy.createController('home1').getView('home');
	home.open();
}

// open the controller home2
function open2() {
	var home = Alloy.createController('home2').getView('home');
	home.open();
}

index.xml

<Alloy>
    <Window>
    	<Button onClick="open1" top="30">Open 1</Button>
    	<Button onClick="open2" top="60">Open 2</Button>
    </Window>
</Alloy>