//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
 
namespace System.ServiceModel
{
    using System;
    using System.Collections.Generic;
    using System.Runtime.Serialization;
 
    public class UriSchemeKeyedCollection : SynchronizedKeyedCollection<string, Uri>
    {
        internal UriSchemeKeyedCollection(object syncRoot)
            : base(syncRoot)
        {
        }
 
        public UriSchemeKeyedCollection(params Uri[] addresses)
        {
            if (addresses == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("addresses");
 
            for (int i = 0; i < addresses.Length; i++)
            {
                this.Add(addresses[i]);
            }
        }
 
        protected override string GetKeyForItem(Uri item)
        {
            return item.Scheme;
        }
 
        protected override void InsertItem(int index, Uri item)
        {
            ValidateBaseAddress(item, "item");
            if (this.Contains(item.Scheme))
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("item", SR.GetString(SR.BaseAddressDuplicateScheme, item.Scheme));
 
            base.InsertItem(index, item);
        }
 
        protected override void SetItem(int index, Uri item)
        {
            ValidateBaseAddress(item, "item");
            if (this[index].Scheme != item.Scheme)
            {
                if (this.Contains(item.Scheme))
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("item", SR.GetString(SR.BaseAddressDuplicateScheme, item.Scheme));
            }
            base.SetItem(index, item);
        }
 
        internal static void ValidateBaseAddress(Uri uri, string argumentName)
        {
            if (uri == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(argumentName);
            }
 
            if (!uri.IsAbsoluteUri)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(argumentName, SR.GetString(SR.BaseAddressMustBeAbsolute));
            }
 
            if (!string.IsNullOrEmpty(uri.UserInfo))
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(argumentName, SR.GetString(SR.BaseAddressCannotHaveUserInfo));
            }
 
            if (!string.IsNullOrEmpty(uri.Query))
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(argumentName, SR.GetString(SR.BaseAddressCannotHaveQuery));
            }
 
            if (!string.IsNullOrEmpty(uri.Fragment))
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(argumentName, SR.GetString(SR.BaseAddressCannotHaveFragment));
            }
        }
    }
}