public static void SetUpSync <TViewModel, TModel>(
this RxList <TViewModel> list,
DbRepository repository,
RxList <TModel> modelList,
Func <TViewModel, TModel> newModelObject
)
where TViewModel : IIdObject, IRxObject
where TModel : IdObject
{
Action <TViewModel, TModel> bind = (viewModel, model) =>
{
viewModel.Changed.Where(y => y.Property.Name != nameof(IdObject.Id)).Subscribe(y =>
{
model.GetType().GetProperty(y.Property.Name)?.SetValue(model, y.NewValue);
});
};
var modelsById = modelList.ToDictionary(x => x.Id);
foreach (var item in list)
{
bind(item, modelsById[item.Id]);
}
list.ItemAdded.Subscribe(async viewModel =>
{
viewModel.ObservePropertyChange(y => y.Id).SubscribeOnce(y => viewModel.Id = y);
var newModel = newModelObject(viewModel);
bind(viewModel, newModel);
modelList.Add(newModel);
await repository.WaitForIdle();
});
list.ItemRemoved.Subscribe(viewModel =>
{
var model = modelList.Single(x => x.Id == viewModel.Id);
modelList.Remove(model);
});
}