singrdk/base/Interfaces/Collections/CollectionBase.csi

// ==++==
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--==
//------------------------------------------------------------------------------

using System;

namespace System.Collections
{
    // Useful base class for typed read/write collections where items derive from object
    public abstract class CollectionBase : IList {
        ArrayList list;

        protected ArrayList InnerList { get; }

        protected IList List { get; }

        public int Count { get; }

        public void Clear();
        public void RemoveAt(int index);

        bool IList.IsReadOnly { get; }
        bool IList.IsFixedSize { get; }
        bool ICollection.IsSynchronized { get; }
        Object ICollection.SyncRoot { get; }
        void ICollection.CopyTo(Array array, int index);

        Object IList.this[int index] { get; set; }
        bool IList.Contains(Object value);
        int IList.Add(Object value);
        void IList.Remove(Object value);
        int IList.IndexOf(Object value);
        void IList.Insert(int index, Object value);

        public IEnumerator GetEnumerator();

        protected virtual void OnSet(int index, Object oldValue, Object newValue);
        protected virtual void OnInsert(int index, Object value);
        protected virtual void OnClear();
        protected virtual void OnRemove(int index, Object value);
        protected virtual void OnValidate(Object value);
        protected virtual void OnSetComplete(int index, Object oldValue, Object newValue);
        protected virtual void OnInsertComplete(int index, Object value);
        protected virtual void OnClearComplete();
        protected virtual void OnRemoveComplete(int index, Object value);
    }
}