Inject Assets Page Extender

InjectAssetsPageExtender.cs

using System.Web.UI;
using EditorEnhancementToolkit.Foundation.ContentEditor.Pipelines.RenderPageAssets;
using Sitecore;
using Sitecore.Layouts;
using Sitecore.Layouts.PageExtenders;
using Sitecore.Pipelines;

namespace EditorEnhancementToolkit.Foundation.ContentEditor.PageExtenders
{
    public class InjectAssetsPageExtender : PageExtender
    {
        public override void Insert()
        {
            var assetArgs = new RenderPageAssetsArgs();
            CorePipeline.Run("renderPageAssets", assetArgs);
            AddControlToPage(assetArgs.Control);
        }

        private static void AddControlToPage(Control control)
        {
            if (control == null)
                return;

            Context.Page.AddRendering(new RenderingReference(control)
            {
                Placeholder = "webedit",
                AddToFormIfUnused = true
            });
        }
    }
}