using System.Collections;

namespace System.Windows.Forms
{
    public abstract class WrappedCollection : IList
    {
        protected abstract IList InnerList { get; }

        public int Count => InnerList.Count;
        void IList.Clear() => InnerList.Clear();
        bool IList.Contains(object value) => InnerList.Contains(value);
        int IList.IndexOf(object value) => InnerList.IndexOf(value);
        IEnumerator IEnumerable.GetEnumerator() => InnerList.GetEnumerator();

        bool IList.IsReadOnly => InnerList.IsReadOnly;
        bool IList.IsFixedSize => InnerList.IsFixedSize;
        object ICollection.SyncRoot => InnerList.SyncRoot;
        bool ICollection.IsSynchronized => InnerList.IsSynchronized;
        object IList.this[int index] { get => InnerList[index]; set => InnerList[index] = value; }
        void ICollection.CopyTo(Array array, int index) => InnerList.CopyTo(array, index);
        int IList.Add(object value) => InnerList.Add(value);
        void IList.Insert(int index, object value) => InnerList.Insert(index, value);
        void IList.Remove(object value) => InnerList.Remove(value);
        void IList.RemoveAt(int index) => InnerList.RemoveAt(index);
    }
}