ServiceLocator.cs

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using System.Collections.Generic;
using System.Linq;
 
namespace PixoVR.Core
{
    public static class ServiceLocator
    {
        private static readonly HashSet<object> _registeredObjects;
 
        static ServiceLocator()
        {
            _registeredObjects = new HashSet<object>();
        }
 
        public static void Register<T>(T obj) where T : class
        {
            _registeredObjects.Add(obj);
        }
        
        public static void Unregister<T>(T obj) where T : class
        {
            _registeredObjects.Remove(obj);
        }
        
        public static T Resolve<T>() where T : class
        {
            var obj = _registeredObjects.SingleOrDefault(x => x is T);
            if (obj != null)
                return obj as T;
 
            return null;
        }
 
        public static void UnregisterAll()
        {
            _registeredObjects.Clear();
        }
    }
}