ModernUO/Projects/Scripts/Engines/VeteranRewards/RewardOptionGump.cs

using System.Collections.Generic;
using System.Linq;
using Server.Network;

namespace Server.Gumps
{
  public interface IRewardOption
  {
    void GetOptions(RewardOptionList list);
    void OnOptionSelected(Mobile from, int choice);
  }

  public class RewardOptionGump : Gump
  {
    private IRewardOption m_Option;
    private RewardOptionList m_Options = new RewardOptionList();

    public RewardOptionGump(IRewardOption option, int title = 0) : base(60, 36)
    {
      m_Option = option;

      m_Option?.GetOptions(m_Options);

      AddPage(0);

      AddBackground(0, 0, 273, 324, 0x13BE);
      AddImageTiled(10, 10, 253, 20, 0xA40);
      AddImageTiled(10, 40, 253, 244, 0xA40);
      AddImageTiled(10, 294, 253, 20, 0xA40);
      AddAlphaRegion(10, 10, 253, 304);

      AddButton(10, 294, 0xFB1, 0xFB2, 0);
      AddHtmlLocalized(45, 296, 450, 20, 1060051, 0x7FFF); // CANCEL

      if (title > 0)
        AddHtmlLocalized(14, 12, 273, 20, title, 0x7FFF);
      else
        AddHtmlLocalized(14, 12, 273, 20, 1080392, 0x7FFF); // Select your choice from the menu below.

      AddPage(1);

      for (int i = 0; i < m_Options.Count; i++)
      {
        AddButton(19, 49 + i * 24, 0x845, 0x846, m_Options[i].ID);
        AddHtmlLocalized(44, 47 + i * 24, 213, 20, m_Options[i].Cliloc, 0x7FFF);
      }
    }

    public override void OnResponse(NetState sender, RelayInfo info)
    {
      if (m_Option != null && Contains(info.ButtonID))
        m_Option.OnOptionSelected(sender.Mobile, info.ButtonID);
    }

    private bool Contains(int chosen) => m_Options?.Any(option => option.ID == chosen) == true;
  }

  public class RewardOption
  {
    public RewardOption(int id, int cliloc)
    {
      ID = id;
      Cliloc = cliloc;
    }

    public int ID{ get; }

    public int Cliloc{ get; }
  }

  public class RewardOptionList : List<RewardOption>
  {
    public void Add(int id, int cliloc)
    {
      Add(new RewardOption(id, cliloc));
    }
  }
}