using System.Collections;
using System.Collections.Generic;
using System.Drawing;

namespace System.Windows.Forms
{
    public class ImageList : IDisposable
    {
        public ImageCollection Images { get; }

        public ColorDepth ColorDepth { get; set; } // TODO? always 32bpp

        public System.Drawing.Size ImageSize { get; set; } // TODO?

        public void Dispose() { }

        public ImageList()
        {
            Images = new();
        }

        public class ImageCollection : CollectionBase
        {
            internal List<System.Windows.Media.ImageSource> ImageSources { get; } = new();

            public Image this[int index] => (index < 0 || index >= Count) ? null : List[index] as Image;

            public void Add(Image value, Color transparentColor)
            {
                // TODO: transparent color? we don't use it
                List.Add(value);
                ImageSources.Add(Helper.GetImage(value));
            }

            public void Add(Image value) => Add(value, Color.Transparent);

            public new void Clear()
            {
                List.Clear();
                ImageSources.Clear();
            }

            public new void RemoveAt(int index)
            {
                List.RemoveAt(index);
                ImageSources.RemoveAt(index);
            }
        }
    }
}