void setupRx()
{
if (rxObjectsSetup)
{
return;
}
NavigateBack = new ReactiveCommand(
NavigationStack.CollectionCountChanged.StartWith(_NavigationStack.Count).Select(x => x > 1));
NavigateBack.Subscribe(_ =>
NavigationStack.RemoveAt(NavigationStack.Count - 1));
Navigate = new NavigationCommand();
Navigate.Subscribe(x => {
var vm = x as IRoutableViewModel;
if (vm == null)
{
throw new Exception("Navigate must be called on an IRoutableViewModel");
}
NavigationStack.Add(vm);
});
NavigateAndReset = new NavigationCommand();
NavigateAndReset.Subscribe(x => {
NavigationStack.Clear();
Navigate.Execute(x);
});
rxObjectsSetup = true;
}
protected void TransferToTargetView()
{
PerformanceMonitorHelper.GetDefaultMonitor().WriteExecutionDuration("TransferToTargetView", () =>
{
if (NavigationCommand != null)
{
NavigationCommand.Execute();
}
});
}
public static void Go <T>(this NavigationCommand This, string key = null)
where T : IRoutableViewModel
{
This.Execute(RxApp.GetService <T>(key));
}