using JD.TeaBoxAddinSystem.Addins.Internal;

namespace JD.TeaBoxAddinSystem.Addins
{
    /// <summary>
    /// A lazy-created instance of a type.
    /// </summary>
    public class LazyInstanceReference<T> : LazyReference<T>
    {
        #region Constructor

        /// <summary>
        /// Constructor.
        /// </summary>
        /// <param name="node"></param>
        /// <param name="typename"></param>
        public LazyInstanceReference(Node node, string typename)
            : base(node, typename)
        { }

        /// <summary>
        /// Copy constructor.
        /// </summary>
        /// <param name="reference"></param>
        public LazyInstanceReference(LazyInstanceReference<T> reference)
            : base(reference)
        { }

        #endregion

        #region Methods

        /// <summary>
        /// Creates an instance from the module.
        /// </summary>
        /// <returns></returns>
        protected override T LoadValue()
        {
            bool result;
            return Node.Module.TryCreateInstance<T>(FileLocation, ResourceName, out result);
        }

        #endregion        
    }
}