// DEL: create dummy data
private static IEnumerable <NeuronDto> CreateChildren(NeuronDto parentDto = null)
{
var random = new Random();
return(Enumerable.Range(1, random.Next(1, 10))
.Select(i =>
{
return NeuronService.CreateNeuron($"Neuron {i}", i % 2 == 0 ? ChildType.Postsynaptic : ChildType.Presynaptic, parentDto);
}));
}
public void Reload(SourceCache <NeuronDto, int> cache, NeuronDto neuronDto = null)
{
IEnumerable <NeuronDto> children = null;
if (neuronDto == null || !cache.Items.Any(i => i.ParentId == neuronDto.Id))
{
children = NeuronService.CreateChildren(neuronDto);
}
else
{
children = cache.Items.Where(i => i.ParentId == neuronDto.Id);
cache.Remove(children);
// TODO: set children to data from cortex graph
}
cache.AddOrUpdate(children);
}
public NeuronGraphPaneViewModel(INeuronService neuronService = null)
{
this.neuronService = neuronService ?? Locator.Current.GetService <INeuronService>();
bool DefaultPredicate(Node <NeuronDto, int> node) => node.IsRoot;
var cache = new SourceCache <NeuronDto, int>(x => x.Id);
this.AddCommand = ReactiveCommand.Create(() =>
this.neuronService.Add(cache, NeuronService.CreateNeuron("Root Neuron", ChildType.NotSet)));
this.ReloadCommand = ReactiveCommand.Create(() => {
cache.Clear();
this.neuronService.Reload(cache);
});
this.cleanUp = cache.AsObservableCache().Connect()
.TransformToTree(child => child.ParentId, Observable.Return((Func <Node <NeuronDto, int>, bool>)DefaultPredicate))
.Transform(e =>
e.Item.Type == ChildType.Postsynaptic ?
(NeuronViewModelBase)(new PostsynapticViewModel(e.Item.Data, e, cache)) :
(NeuronViewModelBase)(new PresynapticViewModel(e.Item.Data, e, cache)))
.Bind(out this.children)
.DisposeMany()
.Subscribe();
}