// --------------------------------------------------------------------------------------------------------------------

// <summary>

//   Server Variable Expression Builder

// </summary>

// --------------------------------------------------------------------------------------------------------------------



namespace BlogEngine.Core.Compilation

{

    using System.Web;

    using System.Web.Compilation;



    /// <summary>

    /// Server Variable Expression Builder

    /// </summary>

    [ExpressionPrefix("ServerVariable")]

    [ExpressionEditor("BlogEngine.Core.Compilation.Design.ServerVariableExpressionEditor, BlogEngine.Core")]

    public class ServerVariableExpressionBuilder : BaseServerObjectExpressionBuilder

    {

        #region Properties



        /// <summary>

        ///     Gets the name of the source object.

        /// </summary>

        /// <value>The name of the source object.</value>

        public override string SourceObjectName

        {

            get

            {

                return "ServerVariable";

            }

        }



        #endregion



        #region Public Methods



        /// <summary>

        /// Creates a new instance of this expression builder.

        /// </summary>

        /// <returns>

        /// A new instance of this expression builder.

        /// </returns>

        public static ServerVariableExpressionBuilder Instance()

        {

            return new ServerVariableExpressionBuilder();

        }



        #endregion



        #region Methods



        /// <summary>

        /// Gets the value.

        /// </summary>

        /// <param name="key">

        /// The key of the value to get.

        /// </param>

        /// <returns>

        /// The value.

        /// </returns>

        protected override object GetValue(string key)

        {

            return HttpContext.Current.Request.ServerVariables[key];

        }



        #endregion

    }

}