tbd-station-14/Content.Client/CartridgeLoader/Cartridges/NotekeeperUi.cs

using Content.Shared.CartridgeLoader;
using Content.Shared.CartridgeLoader.Cartridges;
using Robust.Client.GameObjects;
using Robust.Client.UserInterface;

namespace Content.Client.CartridgeLoader.Cartridges;

public sealed class NotekeeperUi : CartridgeUI
{
    private NotekeeperUiFragment? _fragment;


    public override Control GetUIFragmentRoot()
    {
        return _fragment!;
    }

    public override void Setup(BoundUserInterface userInterface)
    {
        _fragment = new NotekeeperUiFragment();
        _fragment.OnNoteRemoved += note => SendNotekeeperMessage(NotekeeperUiAction.Remove, note, userInterface);
        _fragment.OnNoteAdded += note => SendNotekeeperMessage(NotekeeperUiAction.Add, note, userInterface);
    }

    public override void UpdateState(BoundUserInterfaceState state)
    {
        if (state is not NotekeeperUiState notekeepeerState)
            return;

        _fragment?.UpdateState(notekeepeerState.Notes);
    }

    private void SendNotekeeperMessage(NotekeeperUiAction action, string note, BoundUserInterface userInterface)
    {
        var notekeeperMessage = new NotekeeperUiMessageEvent(action, note);
        var message = new CartridgeUiMessage(notekeeperMessage);
        userInterface.SendMessage(message);
    }
}