netDxf/Collections/TableObjects.cs

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#region netDxf, Copyright(C) 2014 Daniel Carvajal, Licensed under LGPL.

//                        netDxf library
// Copyright (C) 2014 Daniel Carvajal (haplokuon@gmail.com)
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 

#endregion

using System;
using System.Collections;
using System.Collections.Generic;
using netDxf.Tables;

namespace netDxf.Collections
{

    /// <summary>
    /// Represents a list of table objects
    /// </summary>
    /// <typeparam name="T"><see cref="TableObject">TableObject</see>.</typeparam>
    public abstract class TableObjects<T> :
        DxfObject,
        IEnumerable<T> where T : TableObject
        
    {
        #region private fields

        protected int maxCapacity = int.MaxValue;
        protected readonly DxfDocument document;
        protected readonly Dictionary<string, T> list;
        protected readonly Dictionary<string, List<DxfObject>> references;

        #endregion

        #region constructor

        protected TableObjects(DxfDocument document, Dictionary<string, T> list, Dictionary<string, List<DxfObject>> references, string codeName, string handle)
            : base(codeName)
        {
            this.list = list;
            this.references = references;
            this.owner = document;
            this.document = document;

            if (string.IsNullOrEmpty(handle))
                this.document.NumHandles = base.AsignHandle(this.document.NumHandles);