xenadmin/XenAdmin/Dialogs/LicenseManager/SelectionVerifiers/SelectionVerifierFactory.cs

/* Copyright (c) Citrix Systems, Inc. 
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 *     following disclaimer. 
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using System;
using System.Collections.Generic;

namespace XenAdmin.Dialogs.LicenseManagerSelectionVerifiers
{
    public abstract class SelectionVerifierFactory
    {
        public enum Option
        {
            CanUseLicenseServer,
            HaOn,
            NotLive,
            OldServer
        }

        public abstract LicenseSelectionVerifier Verifier(Option option, List<LicenseDataGridViewRow> rows);
    }

    public class LicenseSelectionVerifierFactory : SelectionVerifierFactory
    {
        public override LicenseSelectionVerifier Verifier(Option option, List<LicenseDataGridViewRow> rows)
        {
            LicenseSelectionVerifier verifier = GetCorrectVerifier(option, rows);
            verifier.Verify();
            return verifier;
        }

        private LicenseSelectionVerifier GetCorrectVerifier(Option option, List<LicenseDataGridViewRow> rows)
        {
            if (option == Option.CanUseLicenseServer)
                return new CanUseLicenseServerVerifier(rows);
            if (option == Option.HaOn)
                return new HaOnVerifier(rows);
            if (option == Option.NotLive)
                return new NotLiveVerifier(rows);
            if (option == Option.OldServer)
                return new OlderServerVerifier(rows);

            throw new ArgumentException("No valid option was provided");
        }
    }
}