using System;
using JD.Serializers.Xml;

namespace JD.PropertyService
{
    /// <summary>
    /// Read-Only properties.
    /// </summary>
    internal class ReadOnlyProperties : PropertiesWrapper
    {
        #region Constructor

        internal ReadOnlyProperties(IProperties properties)
            : base(properties)
        {
        }

        #endregion

        #region Properties

        public override bool IsReadOnly
        {
            get { return true; }
        }

        #endregion

        #region Methods

        public override void Set<T>(string key, T value)
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override bool Remove(string propertyName)
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override void Clear()
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override IProperties CreateSubKey(string key, AccessContext mode)
        {
            if (mode == AccessContext.Write)
            {
                throw new InvalidOperationException("Properties are read only.");
            }

            return base.CreateSubKey(key, mode);
        }

        public override bool RemoveSubKey(string key, AccessContext mode)
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override bool Save()
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override IDisposable BeginScopedUpdate()
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override void EndUpdate()
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        public override void ReadFromXml(XmlSerializerReader serializer)
        {
            throw new InvalidOperationException("Properties are read only.");
        }

        #endregion
    }
}