/// <summary>
/// Registers a view model to keep in memory.
/// </summary>
/// <param name="viewModel">The view model to register.</param>
internal void RegisterViewModel(IAccountDataViewModel viewModel)
{
Arguments.NotNull(viewModel, nameof(viewModel));
viewModel.IsEditing = IsEditing;
_viewModels.Add(viewModel);
OnViewModelListChanged?.Invoke(this, EventArgs.Empty);
}
/// <summary>
/// Unregisters the specific view model.
/// </summary>
/// <param name="viewModel">The view model to unregister.</param>
internal void UnregisterViewModel(IAccountDataViewModel viewModel)
{
Arguments.NotNull(viewModel, nameof(viewModel));
_viewModels.Remove(viewModel);
viewModel.UnloadingAsync().ForgetSafely();
OnViewModelListChanged?.Invoke(this, EventArgs.Empty);
}
/// <summary>
/// Registers a view model to a list of account data to delete.
/// This is used in the scenario where the user delete an account data in editing mode then
/// save the changes. When this happens, we will want to iterate through these view models
/// to call the <see cref="IAccountDataViewModel.DeleteAsync(System.Threading.CancellationToken)"/> method.
/// </summary>
/// <param name="viewModel">The view model to register.</param>
internal void RegisterViewModelForDeletion(IAccountDataViewModel viewModel)
{
Arguments.NotNull(viewModel, nameof(viewModel));
_viewModels.Remove(viewModel);
_viewModelsForDeletion.Add(viewModel);
}
