using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;

namespace AssetStudio
{
	public interface IObjChild
	{
		dynamic Parent { get; set; }
	}

	public abstract class ObjChildren<T> : IEnumerable<T> where T : IObjChild
	{
		protected List<T> children;

		public T this[int i]
		{
			get { return (T)children[i]; }
		}

		public int Count
		{
			get { return children.Count; }
		}

		public void InitChildren(int count)
		{
			children = new List<T>(count);
		}

		public void AddChild(T obj)
		{
			children.Add(obj);
			obj.Parent = this;
		}

		public void InsertChild(int i, T obj)
		{
			children.Insert(i, obj);
			obj.Parent = this;
		}

		public void RemoveChild(T obj)
		{
			obj.Parent = null;
			children.Remove(obj);
		}

		public void RemoveChild(int i)
		{
			children[i].Parent = null;
			children.RemoveAt(i);
		}

		public int IndexOf(T obj)
		{
			return children.IndexOf(obj);
		}

		public IEnumerator<T> GetEnumerator()
		{
			return children.GetEnumerator();
		}

		IEnumerator IEnumerable.GetEnumerator()
		{
			return GetEnumerator();
		}
	}
}