Titanium Appcelerator search drop down

index.js

var win = $.index;
Alloy.Globals.ActiveWindow = win;

//for dropdown hints
Alloy.Globals.CurrentDropDown = null;
Alloy.Globals.removeCurrentDropDown = function()    {
                                                        Alloy.Globals.ActiveWindow.remove(Alloy.Globals.CurrentDropDown);
                                                        Alloy.Globals.CurrentDropDown = null;
                                                    };

Alloy.Globals.ActiveWindow.addEventListener('touchstart', function(e)   {
                                                                            if (Alloy.Globals.CurrentDropDown)
                                                                            {
                                                                                Alloy.Globals.removeCurrentDropDown();
                                                                            }
                                                                        });

Alloy.Globals.createDropDown = function(sourceInput, dropDownData) {
    Alloy.Globals.removeCurrentDropDown();
    var inputContainerView = sourceInput.getParent();
    var globalPoint = inputContainerView.convertPointToView (
                                                                {x : sourceInput.rect.x, y : (sourceInput.rect.y + sourceInput.rect.height)},
                                                                Alloy.Globals.ActiveWindow
                                                            );

    var dropDownTable = Ti.UI.createTableView({
                                                  data: dropDownData,
                                                  zIndex : 5,
                                                  top : globalPoint.y,
                                                  left: globalPoint.x,
                                                  height: Ti.UI.SIZE,
                                                  font: {
                                                            fontSize:"18dp"
                                                        },
                                                  width: "280dp",
                                                  backgroundColor: '#FFFFFF'
                                                });

    dropDownTable.addEventListener('touchstart', function(e) {
        if(e.row)
        {
            if (sourceInput.setChoosenData)
            {
                sourceInput.setChoosenData(e);
            } else {
                sourceInput.value = e.row.title;
                sourceInput.chosenId = e.index;
            }

            sourceInput.blur();
            Alloy.Globals.removeCurrentDropDown();
        } 
    });

    Alloy.Globals.CurrentDropDown = dropDownTable;
    Alloy.Globals.ActiveWindow.add(dropDownTable);
};

// somewhere in controller :
$.nationalityPicker.addEventListener('change', function(e) {
    var input = $.nationalityPicker;
    var inputTxt = input.value;
    var countriesDictionary = Alloy.Globals.countriesDictionary;

    // found counties that match
    var dropDownData = [];
    for (var i=0; i < countriesDictionary.length; i++) {
        if (inputTxt.toUpperCase() === countriesDictionary[i].name.substr(0, inputTxt.length))
        {
            if (dropDownData.length < 5)
            {
                dropDownData.push({title : countriesDictionary[i].name, code : countriesDictionary[i].code, id : i});
            }
        }
    };

    // creating drop down
    Alloy.Globals.createDropDown($.nationalityPicker, dropDownData);
});