UVtools/UVtools.Core/PixelEditor/PixelHistory.cs

/*
 *                     GNU AFFERO GENERAL PUBLIC LICENSE
 *                       Version 3, 19 November 2007
 *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 *  Everyone is permitted to copy and distribute verbatim copies
 *  of this license document, but changing it is not allowed.
 */

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;

namespace UVtools.Core.PixelEditor
{
    public class PixelHistory : IEnumerable<PixelOperation>
    {
        public List<PixelOperation> Items { get; } = new List<PixelOperation>();

        public int Count => Items.Count;

        #region Indexers
        public PixelOperation this[uint index] => Items[(int) index];

        public PixelOperation this[int index] => Items[index];

        public PixelOperation this[long index] => Items[(int) index];

        #endregion

        #region Numerators
        public IEnumerator<PixelOperation> GetEnumerator()
        {
            return ((IEnumerable<PixelOperation>)Items).GetEnumerator();
        }

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

        #region Methods

        public void Add(PixelOperation item) => Items.Add(item);
        public void Clear() => Items.Clear();

        public bool Contains(PixelOperation operation)
        {
            for (int i = 0; i < Count; i++)
            {
                if (Items[i].Location == operation.Location && 
                    Items[i].OperationType == operation.OperationType &&
                    Items[i].LayerIndex == operation.LayerIndex) return true;
            }

            return false;
        }

        #endregion

        public void Renumber()
        {
            for (int i = 0; i < Count; i++)
            {
                Items[i].Index = (uint) (i + 1);
            }
        }
    }
}