WindowsPhoneNavigator

internal class WindowsPhoneNavigator : INavigate
{
    private readonly PhoneApplicationFrame _frame;
    private readonly IKnowWhereYourViewIs _viewLocator;
    private readonly ISerializeObjects _serializer;

    public WindowsPhoneNavigator(PhoneApplicationFrame rootFrame, 
        IKnowWhereYourViewIs viewLocator, 
        ISerializeObjects serializer)
    {
        _frame = rootFrame;
        _viewLocator = viewLocator;
        _serializer = serializer;
    }

    public void NavigateTo<TViewModel>() where TViewModel : class
    {
        var viewToNavigateTo = _viewLocator.FindViewFor<TViewModel>();
        var uri = new Uri(string.Format("/Views/{0}.xaml?vmtype={1}", viewToNavigateTo.Name, typeof(TViewModel).AssemblyQualifiedName), UriKind.RelativeOrAbsolute);
        _frame.Navigate(uri);
    }

    public void NavigateTo<TViewModel, TRequest>(TRequest request) where TViewModel : class
    {
        var viewToNavigateTo = _viewLocator.FindViewFor<TViewModel>();
            
        var serializedRequest = _serializer.Serialize(request);

        var uri = new Uri(string.Format("/Views/{0}.xaml?vmtype={1}&request={2}&requestType={3}", viewToNavigateTo.Name, typeof(TViewModel).AssemblyQualifiedName, serializedRequest, typeof(TRequest).AssemblyQualifiedName), UriKind.RelativeOrAbsolute);
        _frame.Navigate(uri);
    }

    public void GoBack()
    {
        _frame.GoBack();
    }
}