/// <summary>
/// Adds _targetScreen_ to the stack and uses the set transition (if there is one, otherwise simply raises the apropriate NavScreen events).
/// </summary>
/// <param name="targetScreen"></param>
public void GoTo(NavScreen targetScreen)
{
if (!initialized)
{
Initialize();
}
if (transition == null)
{
if (CurrentScreen != null)
{
CurrentScreen.OnHiding();
CurrentScreen.OnHidden();
}
targetScreen.OnShowing();
targetScreen.OnShown();
}
else
{
StartCoroutine(transition.Play(CurrentScreen, targetScreen));
}
screens.Add(targetScreen);
}
/// <summary>
/// Removes the NavScreen at the top of the stack using the set transition.
/// </summary>
public void GoBack()
{
if (!initialized)
{
Initialize();
}
if (screens.Count == 0)
{
return;
}
if (!emptyPathAllowed && screens.Count == 1)
{
return;
}
NavScreen previousScreen = screens.Count >= 2 ? screens[screens.Count - 2] : null;
if (transition == null)
{
CurrentScreen.OnHiding();
CurrentScreen.OnHidden();
if (previousScreen != null)
{
previousScreen.OnShowing();
previousScreen.OnShown();
}
}
else
{
StartCoroutine(transition.PlayReverse(CurrentScreen, previousScreen));
}
screens.RemoveAt(screens.Count - 1);
}
public abstract IEnumerator PlayReverse(NavScreen currentScreen, NavScreen previousScreen);
public abstract IEnumerator Play(NavScreen currentScreen, NavScreen nextScreen);