public override void OnNavigatedTo(NavigationEventArgs e, bool setStatusBar = true)
{
#if WINDOWS_PHONE_APP
if (setStatusBar)
{
SetStatusBarColor((FrameworkElement)e.Content);
}
#endif
if (e.NavigationMode == NavigationMode.New)
{
PageStateStack.Push(this.State);
if (InitializeState != null)
{
InitializeState(e.Parameter);
}
}
else if (e.NavigationMode == NavigationMode.Back)
{
var currentState = PageStateStack.Top();
if (State.PageType != currentState.PageType)
{
throw new InvalidOperationException();
}
if (currentState != this.State)
{
this.state = currentState;
State.UpdateTasks(this.Page);
PageStateStack.Pop();
PageStateStack.Push(State);
if (RestoreState != null)
{
RestoreState(State.StateObject);
}
}
State.ResumeTasks();
}
else
{
throw new NotImplementedException("Not allowed navigation mode:" + e.NavigationMode);
}
}
public static void Push(PageState state)
{
BackStack.Add(state);
}