[TIMOB-5167] iOS: Immutable objects on Window object

var win = Ti.UI.createWindow({
  backgroundColor: '#000',
  url: 'window_object_win.js',
  layout:'vertical'
});

win.data = {
  text: 'Initialized'
};

win.open();

win.addEventListener('modifyData', function() {
  win.data.text = 'This should be updated if this object is mutable';
  win.fireEvent('dataUpdated');
});

win.addEventListener('replaceData', function() {
  win.data = { text: 'If the data has changed now then replacing the entire data object works ' };
  win.fireEvent('dataUpdated');
});

var modifyButton = Ti.UI.createButton({
  title: 'Modify window .data object',
  top: 60,
  width: 250,
  height: 80
});

var replaceButton = Ti.UI.createButton({
  title: 'Replace window .data object',
  top: 60,
  width: 250,
  height: 80
});

var label = Ti.UI.createLabel({
  color: '#FFF',
  top: 20,
  height: 200
});

Ti.UI.currentWindow.add(modifyButton);
Ti.UI.currentWindow.add(replaceButton);
Ti.UI.currentWindow.add(label);

modifyButton.addEventListener('click', function() {
  Ti.UI.currentWindow.fireEvent('modifyData');
});

replaceButton.addEventListener('click', function() {
  Ti.UI.currentWindow.fireEvent('replaceData');
});

var counter = 0;

var updateLabelFromData = function() {
  label.text = 'Text (' + counter++ + ' presses) = ' + Ti.UI.currentWindow.data.text;
};

Ti.UI.currentWindow.addEventListener('dataUpdated', updateLabelFromData);

updateLabelFromData();