AutoPatientInfoRecorder/src/AntdUI/Lib/SVG/SvgElementCollection.cs

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// THIS FILE IS PART OF SVG PROJECT
// THE SVG PROJECT IS AN OPENSOURCE LIBRARY LICENSED UNDER THE MS-PL License.
// COPYRIGHT (C) svg-net. ALL RIGHTS RESERVED.
// GITHUB: https://github.com/svg-net/SVG

using System;
using System.Collections.Generic;
using System.Linq;

namespace AntdUI.Svg
{
    /// <summary>
    /// Represents a collection of <see cref="SvgElement"/>s.
    /// </summary>
    public sealed class SvgElementCollection : IList<SvgElement>
    {
        private List<SvgElement> _elements;
        private SvgElement _owner;
        private bool _mock;

        /// <summary>
        /// Initialises a new instance of an <see cref="SvgElementCollection"/> class.
        /// </summary>
        /// <param name="owner">The owner <see cref="SvgElement"/> of the collection.</param>
        internal SvgElementCollection(SvgElement owner)
            : this(owner, false)
        {

        }

        internal SvgElementCollection(SvgElement owner, bool mock)
        {
            if (owner == null)
            {
                throw new ArgumentNullException("owner");
            }

            _elements = new List<SvgElement>();
            _owner = owner;
            _mock = mock;
        }

        /// <summary>
        /// Returns the index of the specified <see cref="SvgElement"/> in the collection.
        /// </summary>
        /// <param name="item">The <see cref="SvgElement"/> to search for.</param>
        /// <returns>The index of the element if it is present; otherwise -1.</returns>
        public int IndexOf(SvgElement item)
        {
            return _elements.IndexOf(item);
        }

        /// <summary>
        /// Inserts the given <see cref="SvgElement"/> to the collection at the specified index.
        /// </summary>
        /// <param name="index">The index that the <paramref name="item"/> should be added at.</param>
        /// <param name="item">The <see cref="SvgElement"/> to be added.</param>
        public void Insert(int index, SvgElement item)
        {
            InsertAndForceUniqueID(index, item, true, true, LogIDChange);