public UIElement Init(XFrame rootFrame, XViewModel rootViewModel, bool isRoot)
{
RootViewModel = rootViewModel;
var rootPage = _viewResolver.ResolvePageType(rootViewModel);
if (rootPage == null)
{
throw new InvalidOperationException("Could not resolve the inital views");
}
UIElement rootElement = _configureNavigation(rootFrame, rootPage, isRoot);
rootFrame.Init();
if (isRoot)
{
_dispatcher.Invoke(() => rootFrame.NavigateTo(rootViewModel));
}
return(rootElement);
}
async void _navigationForward()
{
var vm = _xNavigation.CurrentContentObject;
var currentPage = _rootElement.Content as XPage;
if (currentPage != null && currentPage.DataContext != null && currentPage.DataContext == vm)
{
//This page is already correct (probably an out of XCore back)
return;
}
var p = _viewResolver.ResolvePageType(vm);
if (p == null)
{
throw new Exception("View type not implemented");
}
_rootElement.Navigate(p, _xNavigation.CurrentContentObject);
if (currentPage != null &&
!_xNavigation.NavigationHistory.Contains(currentPage.DataContext) &&
_rootElement.BackStack.Any(_ => _.Parameter == currentPage.DataContext)
)
{
var itemsToRemove = _rootElement.BackStack.Where(_ => _.Parameter == currentPage.DataContext);
foreach (var item in itemsToRemove)
{
_rootElement.BackStack.Remove(item);
}
}
_updateSystemButton();
}