using System;
using System.Collections.Generic;

/// <summary>
/// This interface defines an observable. Since registering those is fairly generic, we also just keep a generic one around.
/// Works somewhat similar to IObservable<T>, except that it's our own really.
/// While we use generics here, theoretically hardcoding Item types would do the job
/// </summary>
public interface IModelObservable<T>
{
    IDisposable RegisterObserver(IShopModelObserver<T> observer);
    void RemoveObserver(IShopModelObserver<T> observer);
    void OnRemove(T val);
    void OnSelect(T val);
}