public void NavigationInfoIsNullForUnregisteredPage()
{
var name = "UnRegisteredPage";
var info = PageNavigationRegistry.GetPageNavigationInfo(name);
Assert.Null(info);
}
private static Page ProcessCurrentPageNavigationPath(Page page, Stack <string> stack)
{
var currentPageKeyInfo = PageNavigationRegistry.GetPageNavigationInfo(page.GetType());
string currentSegment = $"{currentPageKeyInfo.Name}";
var parent = page.Parent as Page;
if (parent != null)
{
var parentKeyInfo = PageNavigationRegistry.GetPageNavigationInfo(parent.GetType());
if (parent is TabbedPage || parent is CarouselPage)
{
//set the selected tab to the current page
currentSegment = $"{parentKeyInfo.Name}?{KnownNavigationParameters.SelectedTab}={currentPageKeyInfo.Name}";
page = parent;
}
else if (parent is MasterDetailPage)
{
currentSegment = $"{parentKeyInfo.Name}/{currentPageKeyInfo.Name}";
page = parent;
}
}
stack.Push(currentSegment);
return(page);
}
public void RegisterPageForNavigation()
{
PageNavigationRegistry.ClearRegistrationCache();
var name = "MainPage";
var type = typeof(PageMock);
PageNavigationRegistry.Register(name, type);
var info = PageNavigationRegistry.GetPageNavigationInfo(name);
Assert.NotNull(info);
}
private static void AddSegmentToStack(Page page, Stack <string> stack)
{
if (page == null)
{
return;
}
var keyInfo = PageNavigationRegistry.GetPageNavigationInfo(page.GetType());
if (keyInfo != null)
{
stack.Push(keyInfo.Name);
}
}
private void OnCurrentItemChanged(object sender, CurrentItemChangedEventArgs e)
{
if (sender is CarouselView carousel && carousel.CurrentItem != CurrentView && carousel.CurrentItem != null && carousel.CurrentItem is VisualElement newActiveView)
{
var previousView = CurrentView;
CurrentView = newActiveView;
if (!_region.ActiveViews.Contains(newActiveView))
{
_region.Activate(newActiveView);
}
var info = PageNavigationRegistry.GetPageNavigationInfo(newActiveView.GetType());
var context = new NavigationContext(_region.NavigationService, new Uri(info.Name, UriKind.RelativeOrAbsolute));
MvvmHelpers.OnNavigatedFrom(previousView, context);
MvvmHelpers.OnNavigatedTo(newActiveView, context);
}
}