beginnings of a NavGroup Module to give me top window and a way to pop all windows to go back home. Working on ability to go to specific window also

app.js

Ti.include('my_navgroup.js');

function createWindow(_title) {
    var win1=Titanium.UI.createWindow({
        width:'100%',
        height:'100%',
        title:_title,
        id:"win-"+_title,
        left:0,
        top:0,
        backButtonTitle:"Back"
    });

    var actionBtn = Titanium.UI.createButton({
        title:"Next",
        style:Titanium.UI.iPhone.SystemButtonStyle.BORDERED,
    });
    actionBtn.addEventListener('click', function() {
        Ti.API.debug("window clicked");
        myNavGroup.openWindow(createWindow((new Date()).getTime()), {});
    });
    win1.rightNavButton = actionBtn;

    var homeBtn = Titanium.UI.createButton({
        title:"Home",
        style:Titanium.UI.iPhone.SystemButtonStyle.BORDERED,
        width:100,
        height:35
    });
    homeBtn.addEventListener('click', function() {
        Ti.API.debug("home clicked");
        myNavGroup.goHome();
    });
    win1.add(homeBtn);

    return win1;
}

//
var win1=Titanium.UI.createWindow({
    width:'100%',
    height:'100%',
    title:"Home",
    id:"win-Home",
    left:0,
    top:0
});

var actionBtn = Titanium.UI.createButton({
    title:"Next",
    style:Titanium.UI.iPhone.SystemButtonStyle.BORDERED,
});
actionBtn.addEventListener('click', function() {
    Ti.API.debug("window clicked");
    myNavGroup.openWindow(createWindow((new Date()).getTime()), {});
});
win1.rightNavButton = actionBtn;

myNavGroup.create(win1);

my_navgroup.js

var myNavGroup = function() {
    var _topWindow, _windowArray, _tab, _tabGroup;

    _windowArray = [];
    _tabGroup = Titanium.UI.createTabGroup();

    /**
     * @returns the top window
     */
    function getTopWindow() {
        return _windowArray[_windowArray.length-1];
    };

    /**
     * @returns all the windows
     */
    function windowList() {
        return _windowArray
    };

    /**
     * opens window
     */
    function openWindow(window, params) {
        window.tabBarHidden = true;
        _tab.open(window, params);
        _windowArray.push(window);

        window.addEventListener('close', function(e) {
            if (_windowArray.length != 1) {
                _windowArray.pop();
            }

            Ti.API.debug("close: window array " + _windowArray);
            Ti.API.debug("close: window top " + _windowArray[_windowArray.length-1]);
        });
        Ti.API.debug("open: window array " + _windowArray);
        Ti.API.debug("open: window top " + _windowArray[_windowArray.length-1]);
    };

    /**
     * creates the navigation group with the initial window
     */
    function create(window, params) {
        window.tabBarHidden = true;
        _tab = Titanium.UI.createTab({
            window:window
        });

        _tabGroup.addTab(_tab);
        _tabGroup.open();

        _windowArray.push(window);
        return this;
    };

    /**
     * pops all windows off, returns to home window
     */
    function goHome(window, params) {
        var len = _windowArray.length-1
        for (var i=0; i < len; i++) {
            _win = _windowArray.pop();
            Ti.API.debug(i +" closing window "+_win);

            _win.close({
                animate:false
            });
            _win = null;
        };
        return _windowArray
    };

    /**
     * pops all windows off, until it gets to a specific window specified
     * by the window id
     * @TODO
     */
    function goToWindowById(_id) {

        if (_windowArray[_windowArray.length-1].id == _id) {
            return
        }
    };

    /**
     * pops all windows off, until it gets to a specific window specified
     * by the window index
     * @TODO
     */
    function goToWindowByIndex(_index) {

        if (_windowArray.length-1 == _index) {
            return
        }
    };

    return {
        goHome : goHome,
        create : create,
        openWindow : openWindow,
        windowList : windowList,
        getTopWindow : getTopWindow
    }
}();