DemoMutateReceiverList.cs

using System;
using System.Windows.Forms;
using SynchronousMessageSystem;

namespace DemoApplication;

public partial class DemoMutateReceiverList : Form
{
    private ActorSystem ActorSystem { get; }

    public DemoMutateReceiverList()
    {
        InitializeComponent();
        // 1. Create the actor system.
        ActorSystem = new ActorSystem();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        // 5. Send a string to Actor2c. Click this button twice.
        ActorSystem.GetActor<Actor1C>()!.SendMessage();
    }

    private void DemoMutateReceiverList_Load(object sender, EventArgs e)
    {
        // 2. Create the actors.
        ActorSystem.AddActor(new Actor1C());
        ActorSystem.AddActor(new Actor2C());
    }

    public class Actor1C : Actor
    {
        public void SendMessage()
        {
            Talk(typeof(Actor2C), "Hello!");
        }

        public override void Other(Actor sender, ActorMatch? address, object message)
        {
        }
    }

    public class Actor2C : Actor
    {
        public Actor2C()
        {
            // 3. Configure this actor to have the FirstTimeAStringArrives function to respond when strings are sent.
            MatchList.Add(new ActorMatch(typeof(string), FirstTimeAStringArrives));
        }

        public void FirstTimeAStringArrives(Actor sender, ActorMatch address, object message)
        {
            // 4. reconfigure this actor to have the SecondTimeAStringArrives function to respond when strings are sent.
            MessageBox.Show((string)message, @"First time");
            MatchList.Clear();
            MatchList.Add(new ActorMatch(typeof(string), SecondTimeAStringArrives));
        }

        public void SecondTimeAStringArrives(Actor sender, ActorMatch address, object message)
        {
            MessageBox.Show((string)message, @"Second time");
        }

        public override void Other(Actor sender, ActorMatch? address, object message)
        {
        }
    }
}