async Task NavigateTo <TViewModel>(Func <TViewModel, Task> initialize, Func <TViewModel, bool> match = null)
where TViewModel : class, IPanePageViewModel
{
Guard.ArgumentNotNull(initialize, nameof(initialize));
if (Content != navigator)
{
return;
}
await navigating.WaitAsync();
try
{
var viewModel = navigator.History
.OfType <TViewModel>()
.FirstOrDefault(x => match?.Invoke(x) ?? true);
if (viewModel == null)
{
viewModel = viewModelFactory.CreateViewModel <TViewModel>();
navigator.NavigateTo(viewModel);
await initialize(viewModel);
}
else if (navigator.Content != viewModel)
{
navigator.NavigateTo(viewModel);
}
}
finally
{
navigating.Release();
}
}
