async Task PopToRootAsyncInner(bool animated)
{
if (StackDepth == 1)
{
return;
}
Element[] childrenToRemove = InternalChildren.Skip(1).ToArray();
foreach (Element child in childrenToRemove)
{
InternalChildren.Remove(child);
}
CurrentPage = RootPage;
var args = new NavigationRequestedEventArgs(RootPage, animated);
EventHandler <NavigationRequestedEventArgs> requestPopToRoot = PopToRootRequested;
if (requestPopToRoot != null)
{
requestPopToRoot(this, args);
if (args.Task != null)
{
await args.Task;
}
}
PoppedToRoot?.Invoke(this, new PoppedToRootEventArgs(RootPage, childrenToRemove.OfType <Page>().ToList()));
}
async Task SendHandlerUpdateAsync(bool animated, bool push = false, bool pop = false, bool popToRoot = false)
{
// Wait for any pending navigation tasks to finish
await WaitForCurrentNavigationTask();
var completionSource = new TaskCompletionSource <object>();
CurrentNavigationTask = completionSource.Task;
_taskCompletionSource = completionSource;
// We create a new list to send to the handler because the structure backing
// The Navigation stack isn't immutable
var previousPage = CurrentPage;
var immutableNavigationStack = new List <IView>(NavigationStack);
// Alert currently visible pages that navigation is happening
SendNavigating();
// Create the request for the handler
var request = new NavigationRequest(immutableNavigationStack, animated);
((INavigationView)this).RequestNavigation(request);
// Wait for the handler to finish processing the navigation
await completionSource.Task;
// Send navigated event to currently visible pages and associated navigation event
SendNavigated(previousPage);
if (push)
{
Pushed?.Invoke(this, new NavigationEventArgs(CurrentPage));
}
else if (pop)
{
Popped?.Invoke(this, new NavigationEventArgs(previousPage));
}
else
{
PoppedToRoot?.Invoke(this, new NavigationEventArgs(previousPage));
}
}
