public void RemoveControlPageListener(System.Action <ControlPage> listener)
{
if (!OnPageActivation.GetInvocationList().Contains(listener))
{
return;
}
OnPageActivation -= listener;
}
public void AddControlPageListener(System.Action <ControlPage> listener)
{
if (OnPageActivation != null && OnPageActivation.GetInvocationList().Contains(listener))
{
return;
}
OnPageActivation += listener;
}
public void SetActivePage(ControlPage page)
{
if (page == currentActivePage)
{
return;
}
prevPage = currentActivePage;
currentActivePage = page;
OnPageActivation?.Invoke(currentActivePage);
}
