public override void OnNavigatedFrom(NavigationMode mode, Type sourceType)
{
State.StopTasks();
if (mode == NavigationMode.Back)
{
Page.NavigationCacheMode = NavigationCacheMode.Disabled;
PageStateStack.Pop();
}
else if (mode == NavigationMode.New)
{
if (SaveState != null)
{
State.StateObject = SaveState();
}
//var cachedPage = PageStateStack.SameCachedPage(sourceType);
//if (cachedPage != null)
//{
// cachedPage.Page.NavigationCacheMode = NavigationCacheMode.Disabled;
//}
}
else
{
throw new NotImplementedException("Not allowed navigation mode:" + mode);
}
#if WINDOWS_PHONE_APP
StatusBar.GetForCurrentView().ForegroundColor = null;
StatusBar.GetForCurrentView().BackgroundOpacity = 0.0;
#endif
Logging.Save();
}
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);
}
}