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

// <summary>

//   Code Expression Editor

// </summary>

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



namespace BlogEngine.Core.Compilation.Design

{

    using System;

    using System.Web.UI.Design;



    /// <summary>

    /// Code Expression Editor

    /// </summary>

    public class CodeExpressionEditor : ExpressionEditor

    {

        #region Public Methods



        /// <summary>

        /// Evaluates an expression string and provides the design-time value for a control property.

        /// </summary>

        /// <param name="expression">

        /// An expression string to evaluate. The expression does not include the expression prefix.

        /// </param>

        /// <param name="parseTimeData">

        /// An object containing additional parsing information for evaluating <paramref name="expression"/>. This typically is provided by the expression builder.

        /// </param>

        /// <param name="propertyType">

        /// The type of the control property to which <paramref name="expression"/> is bound.

        /// </param>

        /// <param name="serviceProvider">

        /// A service provider implementation supplied by the designer host, used to obtain additional design-time services.

        /// </param>

        /// <returns>

        /// The object referenced by the evaluated expression string, if the expression evaluation succeeded; otherwise, null.

        /// </returns>

        public override object EvaluateExpression(

            string expression, object parseTimeData, Type propertyType, IServiceProvider serviceProvider)

        {

            return string.Concat("[Code:", expression, "]");

        }



        #endregion

    }

}