/// <inheritdoc /> public override void ActivateItem(IScreen item) { if (item == ActiveItem) { return; } if (ActiveItem != null) { // TODO: ActiveItem is null after Deactivate base.DeactivateItem(ActiveItem, true); var detailItem = (TDetailsType)ActiveItem; DetailsFactory.Destroy(detailItem); } base.ActivateItem(item); NotifyOfPropertyChange(() => CurrentDetails); }