Notification System

Unity Engine
1

Hi all! I’m writing notification system script. Please, help me improve it.
I will be glad to see comments and remarks. Sorry for my English:)

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public static class MyNotifications
{
	public delegate void ComponentDelegate ( Component sender, ComponentEventArgs e );
	
	private static Dictionary<string, ComponentDelegate> _events = new Dictionary<string, ComponentDelegate> ();
	
	/// <summary>
	/// Adds the observer.
	/// </summary>
	/// <param name='method'>
	/// Method for call.
	/// </param>
	public static void AddObserver ( ComponentDelegate method )
	{
		if ( _events.ContainsKey ( method.Method.Name ) )
			_events[ method.Method.Name ] += method;
		else
			_events.Add ( method.Method.Name, method );
	}
	
	/// <summary>
	/// Posts the notification.
	/// </summary>
	/// <param name='sender'>
	/// Sender.
	/// </param>
	/// <param name='name'>
	/// Event name.
	/// </param>
	/// <param name='e'>
	/// Parameters.
	/// </param>
	public static void PostNotification ( Component sender, string name, ComponentEventArgs e )
	{
		if ( _events.ContainsKey ( name ) )
		{
			ComponentDelegate curEvent = _events[ name ];
			
			foreach ( ComponentDelegate del in curEvent.GetInvocationList () )
			{
				if ( del.Target.ToString () == "null" )
				{
					curEvent -= del;
				}
			}
			if ( curEvent != null )
				curEvent ( sender, e );
		}
	}
}

public class ComponentEventArgs : System.EventArgs
{
	public object UserData;
	
	new public static readonly ComponentEventArgs Empty = new ComponentEventArgs ();
}

Usability:

using UnityEngine;
using System.Collections;

public class TestA : MonoBehaviour
{
	void Awake ()
	{
		MyNotifications.AddObserver ( OnSomething );
	}
	
	void OnSomething ( Component sender, ComponentEventArgs e )
	{
		print ( sender.gameObject.tag );
		print ( e.UserData );
	}
}

using UnityEngine;
using System.Collections;

public class TestB : MonoBehaviour
{
	void Start ()
	{
		MyNotifications.PostNotification ( this, "OnSomething", new ComponentEventArgs { UserData = 2.3f } );
	}
}
2

Take a look at eDriven’s EventDispatcher class.