public async Task ViewIsOnlyActivatedWhenViewModelActivationHasCompleted()
{
var scheduler = new TestScheduler();
var screen = new DelayedScreen(scheduler);
var screenView = new FakeDelayedScreenView(screen);
var conductor = new DelayedConductor(scheduler);
var conductorView = new FakeDelayedConductorView(conductor);
conductor.ActiveItem = screen;
Assert.Equal(false, screenView.IsActivated);
Assert.Equal(false, conductorView.IsActivated);
// WPF raises the ViewLoaded event.
// Note this event will be raised on root and will then be raised successively on all children.
// Ref MSDN https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/object-lifetime-events
conductorView.Loaded.OnNext(Unit.Default);
screenView.Loaded.OnNext(Unit.Default);
Assert.Equal(false, screenView.IsActivated);
Assert.Equal(false, conductorView.IsActivated);
// The Conductor's Conductor triggers ActivateAsync
await((IActivate)conductor).ActivateAsync(CancellationToken.None);
Assert.Equal(true, screenView.IsActivated);
Assert.Equal(true, conductorView.IsActivated);
screenView.Unloaded.OnNext(Unit.Default);
conductorView.Unloaded.OnNext(Unit.Default);
screenView.Dispose();
conductorView.Dispose();
}
public async Task ViewIsOnlyActivatedWhenViewIsAddedToVisualTree()
{
var scheduler = new TestScheduler();
var screen = new DelayedScreen(scheduler);
var view = new FakeDelayedScreenView(screen);
Assert.Equal(false, view.IsActivated);
// The Screen's Conductor triggers ActivateAsync
await((IActivate)screen).ActivateAsync(CancellationToken.None);
Assert.Equal(false, view.IsActivated);
// WPF raises the ViewLoaded event on FrameworkElement
view.Loaded.OnNext(Unit.Default);
Assert.Equal(true, view.IsActivated);
view.Unloaded.OnNext(Unit.Default);
view.Dispose();
}
public async Task ConductorScopesAreOnlyExecutedAfterActiveItemIsFullyActivated()
{
var scheduler = new TestScheduler();
var screen = new DelayedScreen(scheduler);
var screenView = new FakeDelayedScreenView(screen);
var conductor = new DelayedConductor(scheduler)
{
ActiveItem = screen
};
long screenFullyActivatedTime = 0; // Incl scopes
long conductorActivationTime = 0; // Only async
var disposables = new CompositeDisposable();
screen
.WhenAnyValue(x => x.IsFullyActivated)
.Do(_ => screenFullyActivatedTime = scheduler.Clock)
.Subscribe()
.DisposeWith(disposables);
conductor
.WhenAnyValue(x => x.IsActive)
.Do(_ => conductorActivationTime = scheduler.Clock)
.Subscribe()
.DisposeWith(disposables);
// WPF raises the ViewLoaded event.
screenView.Loaded.OnNext(Unit.Default);
// The Conductor's Conductor triggers ActivateAsync
await((IActivate)conductor).ActivateAsync(CancellationToken.None);
Assert.Equal(610, screenFullyActivatedTime);
Assert.Equal(610, conductorActivationTime);
Assert.Equal(610, conductor.WhenInitializedScopeStartTime);
disposables.Dispose();
screenView.Unloaded.OnNext(Unit.Default);
screenView.Dispose();
}