Umbraco-CMS/src/Umbraco.Web.BackOffice/Trees/RootNodeRenderingNotification.cs

using Microsoft.AspNetCore.Http;
using Umbraco.Cms.Core.Trees;

namespace Umbraco.Cms.Core.Notifications
{
    /// <summary>
    /// A notification that allows developer to modify the root tree node that is being rendered
    /// </summary>
    public class RootNodeRenderingNotification : INotification
    {
        /// <summary>
        /// The root node being rendered
        /// </summary>
        public TreeNode Node { get; }

        /// <summary>
        /// The alias of the tree the menu is rendering for
        /// </summary>
        public string TreeAlias { get; }

        /// <summary>
        /// The query string of the current request
        /// </summary>
        public FormCollection QueryString { get; }

        public RootNodeRenderingNotification(TreeNode node, FormCollection queryString, string treeAlias)
        {
            Node = node;
            QueryString = queryString;
            TreeAlias = treeAlias;
        }
    }
}