#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.Reflection;
using Newtonsoft.Json.Utilities;
using System.Collections;
#if NET20
using Newtonsoft.Json.Utilities.LinqBridge;
#else
using System.Linq;
#endif

namespace Newtonsoft.Json.Serialization
{
  /// <summary>
  /// Contract details for a <see cref="Type"/> used by the <see cref="JsonSerializer"/>.
  /// </summary>
  public class JsonContainerContract : JsonContract
  {
    private JsonContract _itemContract;
    private JsonContract _finalItemContract;

    // will be null for containers that don't have an item type (e.g. IList) or for complex objects
    internal JsonContract ItemContract
    {
      get { return _itemContract; }
      set
      {
        _itemContract = value;
        if (_itemContract != null)
        {
          _finalItemContract = (_itemContract.UnderlyingType.IsSealed()) ? _itemContract : null;
        }
        else
        {
          _finalItemContract = null;
        }
      }
    }

    // the final (i.e. can't be inherited from like a sealed class or valuetype) item contract
    internal JsonContract FinalItemContract
    {
      get { return _finalItemContract; }
    }

    /// <summary>
    /// Gets or sets the default collection items <see cref="JsonConverter" />.
    /// </summary>
    /// <value>The converter.</value>
    public JsonConverter ItemConverter { get; set; }

    /// <summary>
    /// Gets or sets a value indicating whether the collection items preserve object references.
    /// </summary>
    /// <value><c>true</c> if collection items preserve object references; otherwise, <c>false</c>.</value>
    public bool? ItemIsReference { get; set; }

    /// <summary>
    /// Gets or sets the collection item reference loop handling.
    /// </summary>
    /// <value>The reference loop handling.</value>
    public ReferenceLoopHandling? ItemReferenceLoopHandling { get; set; }

    /// <summary>
    /// Gets or sets the collection item type name handling.
    /// </summary>
    /// <value>The type name handling.</value>
    public TypeNameHandling? ItemTypeNameHandling { get; set; }

    /// <summary>
    /// Initializes a new instance of the <see cref="JsonContainerContract"/> class.
    /// </summary>
    /// <param name="underlyingType">The underlying type for the contract.</param>
    internal JsonContainerContract(Type underlyingType)
      : base(underlyingType)
    {
      JsonContainerAttribute jsonContainerAttribute = JsonTypeReflector.GetJsonContainerAttribute(underlyingType);

      if (jsonContainerAttribute != null)
      {
        if (jsonContainerAttribute.ItemConverterType != null)
          ItemConverter = JsonConverterAttribute.CreateJsonConverterInstance(jsonContainerAttribute.ItemConverterType);

        ItemIsReference = jsonContainerAttribute._itemIsReference;
        ItemReferenceLoopHandling = jsonContainerAttribute._itemReferenceLoopHandling;
        ItemTypeNameHandling = jsonContainerAttribute._itemTypeNameHandling;
      }
    }
  }
}