Source/AdvTree/NodeCollection.cs

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using System;
using System.Collections;
using System.ComponentModel;

namespace DevComponents.AdvTree
{
	/// <summary>
	/// Represents collection for Node objects.
	/// </summary>
	public class NodeCollection:CollectionBase 
	{
		#region Private Variables
		private Node m_ParentNode=null;
		private AdvTree m_TreeControl=null;
		private eTreeAction m_SourceAction=eTreeAction.Code;
        private bool _PassiveCollection = false;
		#endregion

		#region Internal Implementation
		public NodeCollection()
		{
		}
        internal eTreeAction SourceAction
        {
            get
            {
                return m_SourceAction;
            }
            set
            {
                m_SourceAction = value;
            }
        }
        internal bool PassiveCollection
        {
            get { return _PassiveCollection; }
            set
            {
                _PassiveCollection = value;
            }
        }
		/// <summary>
		/// Gets or sets the node this collection is associated with.
		/// </summary>
		[Browsable(false),DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
		public Node ParentNode
		{
			get {return m_ParentNode;}
		}
		/// <summary>
		/// Sets the node collection belongs to.
		/// </summary>
		/// <param name="parent">Node that is parent of this collection.</param>
		internal void SetParentNode(Node parent)
		{
			m_ParentNode=parent;
		}

		internal AdvTree TreeControl
		{