private void Renavigate([NotNull] INavigationContext context, NavigatingCancelEventArgsBase args)
{
if (_navigatingCancelArgs == null)
{
if (!NavigationService.Navigate(args))
{
TryCompleteNavigationTask(args.Context, false);
NavigationDispatcher.OnNavigationCanceled(context);
}
}
else
{
_navigatingCancelArgs.Cancel = false;
}
}
protected virtual void OnNavigating(NavigatingCancelEventArgsBase args)
{
if (args.Context.Contains(IgnoreNavigatingConstant))
{
return;
}
var context = CreateContextNavigateFrom(args);
if (context == null)
{
return;
}
args.Cancel = true;
var navigateTask = !args.IsCancelable
? Empty.TrueTask
: NavigationDispatcher.OnNavigatingAsync(context);
navigateTask.TryExecuteSynchronously(task =>
{
if (!task.IsCanceled && task.IsFaulted)
{
TryCompleteNavigationTask(args.Context, false);
NavigationDispatcher.OnNavigationFailed(context, task.Exception);
return;
}
if (task.IsCanceled || !task.Result)
{
TryCompleteNavigationTask(args.Context, false);
if (!context.NavigationMode.IsClose())
{
NavigationDispatcher.OnNavigationCanceled(context);
}
return;
}
ThreadManager.Invoke(ExecutionMode.AsynchronousOnUiThread, this, context, args, (@this, ctx, e) =>
{
e.Context.AddOrUpdate(IgnoreNavigatingConstant, null);
@this.Renavigate(ctx, e);
});
});
}