using System;
using JD.TeaBoxAddinSystem.Addins.Internal;

namespace JD.TeaBoxAddinSystem.Addins
{
    /// <summary>
    /// ExtensionNode Changed EventArgs
    /// </summary>
    public class ExtensionNodeChangedEventArgs : EventArgs
    {
        #region Variables

        private readonly string m_path;
        private readonly TreeNode m_node;

        #endregion

        #region Constructor

        internal ExtensionNodeChangedEventArgs(TreeNode node)
        {
            System.Diagnostics.Debug.Assert(node != null);
            m_path = node.FullPath;
            m_node = node;            
        }

        internal ExtensionNodeChangedEventArgs(string path)
        {
            m_path = path;
            m_node = null;
        }

        #endregion

        #region Properties

        /// <summary>
        /// Path of the node where the change occurs.
        /// </summary>
        public string Path
        {
            get
            {
                return m_path;
            }
        }

        /// <summary>
        /// ExtensionNode involved in the change.
        /// </summary>
        public ExtensionNode ExtensionNode
        {
            get
            {
                return m_node == null ? null : m_node.ExtensionNode;
            }
        }

        #endregion
    }
}