In several of my different umbraco pages, there is a strange issue: if I unpublish a node, it will not be greyed out by getting the class "not-published". Instead it stays in normal color as the published nodes, so the editor can not make a difference between published, unpublished and drafted nodes.

Thanks to codegarden 22 - #cg22 - I found a work-arround I want to share with you guys.

It is not very performant, as we have to do an additional Database Call in the render tree event, but for small pages it works und fixes the issue above.

If anyone has a better idea how to improve the work arround, just let me know.

So here we go, just create a class that hook into the treerender event and execute this code:

    using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Web;
using Umbraco.Core;
using Umbraco.Core.Composing;
using Umbraco.Core.Models;
using Umbraco.Core.Services;
using Umbraco.Web.Models.Trees;
using Umbraco.Web.Trees;
using IComponent = Umbraco.Core.Composing.IComponent;

namespace umbBertling2020.Controllers
{
    [RuntimeLevel(MinLevel = RuntimeLevel.Run)]
    public class TreerenderEventComposer : ComponentComposer<TreerenderEvent>, IUserComposer
    {
    }

    public class TreerenderEvent : IComponent
    {

        private readonly IContentService _contentService;

        public TreerenderEvent(IContentService contentService)
        {
            this._contentService = contentService;
        }

        // register the event listener with a component:
        public void Initialize()
        {
            TreeControllerBase.TreeNodesRendering += TreeControllerBase_TreeNodesRendering;
        }

        public void Terminate()
        {
            // unsubscribe on shutdown
            TreeControllerBase.TreeNodesRendering -= TreeControllerBase_TreeNodesRendering;
        }

        // the event listener method:
        private void TreeControllerBase_TreeNodesRendering(TreeControllerBase sender, TreeNodesRenderingEventArgs e)
        {
            // this example will filter any content tree node whose node name starts with

            // 'Private', for any user that is in the customUserGroup
            if (sender.TreeAlias == "content")
            {
                List<int> nodeCollection = new List<int>();
                foreach(TreeNode node in e.Nodes)
                {                   
                    nodeCollection.Add(int.Parse(node.Id.ToString()));
                }

                foreach (IContent n in _contentService.GetByIds(nodeCollection))
                {
                    if (n != null && n.PublishedState == PublishedState.Unpublished)
                    {
                        e.Nodes.Where(x => x.Id.ToString() == n.Id.ToString()).FirstOrDefault().CssClasses.Add("not-published");
                    }
                }

            }
        }
    }
}