// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
namespace System.ServiceModel.Channels
{
    public abstract class MessageEncodingBindingElement : BindingElement
    {
        protected MessageEncodingBindingElement()
        {
        }
 
        protected MessageEncodingBindingElement(MessageEncodingBindingElement elementToBeCloned)
            : base(elementToBeCloned)
        {
        }
 
        public abstract MessageVersion MessageVersion { get; set; }
 
 
        internal virtual bool IsWsdlExportable
        {
            get { return true; }
        }
 
        internal IChannelFactory<TChannel> InternalBuildChannelFactory<TChannel>(BindingContext context)
        {
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("context"));
            }
 
            context.BindingParameters.Add(this);
            return context.BuildInnerChannelFactory<TChannel>();
        }
 
        internal bool InternalCanBuildChannelFactory<TChannel>(BindingContext context)
        {
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("context"));
            }
 
            context.BindingParameters.Add(this);
            return context.CanBuildInnerChannelFactory<TChannel>();
        }
 
        public abstract MessageEncoderFactory CreateMessageEncoderFactory();
 
        public override T GetProperty<T>(BindingContext context)
        {
            if (context == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
            }
            if (typeof(T) == typeof(MessageVersion))
            {
                return (T)(object)this.MessageVersion;
            }
            else
            {
                return context.GetInnerProperty<T>();
            }
        }
 
        internal virtual bool CheckEncodingVersion(EnvelopeVersion version)
        {
            return false;
        }
 
        internal override bool IsMatch(BindingElement b)
        {
            if (b == null)
                return false;
 
            MessageEncodingBindingElement encoding = b as MessageEncodingBindingElement;
            if (encoding == null)
                return false;
 
            return true;
        }
    }
}