public IScreen PopScreen()
{
ScreenContext activeContext = null;
if (_screenStack.Count > 0)
{
activeContext = _screenStack.Pop();
if (_contentLoaded == true)
{
activeContext.Screen.UnloadContent();
}
}
return(activeContext != null ? activeContext.Screen : null);
}
public void PushScreen(IScreen screen)
{
ScreenContext activeContext = null;
if (_screenStack.Count > 0)
{
activeContext = _screenStack.Peek();
}
var underlayingScreens = new List <IScreen>();
if (screen.IsPopup == true && activeContext != null)
{
underlayingScreens.AddRange(activeContext.UnderlayingScreens);
underlayingScreens.Add(activeContext.Screen);
}
if (_contentLoaded)
{
screen.LoadContent();
}
_screenStack.Push(new ScreenContext(screen, underlayingScreens));
}