Allow for changing the weight of built-in and 3rd party dashboards (#8628)

src/Umbraco.Web/Dashboards/DashboardCollectionBuilder.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 using Umbraco.Core;
 using Umbraco.Core.Composing;
@@ -9,8 +10,22 @@ namespace Umbraco.Web.Dashboards
 {
     public class DashboardCollectionBuilder : WeightedCollectionBuilderBase<DashboardCollectionBuilder, DashboardCollection, IDashboard>
     {
+        private Dictionary<Type, int> _customWeights = new Dictionary<Type, int>();
+
         protected override DashboardCollectionBuilder This => this;
 
+        /// <summary>
+        /// Changes the default weight of a dashboard
+        /// </summary>
+        /// <typeparam name="T">The type of dashboard</typeparam>
+        /// <param name="weight">The new dashboard weight</param>
+        /// <returns></returns>
+        public DashboardCollectionBuilder SetWeight<T>(int weight) where T : IDashboard
+        {
+            _customWeights[typeof(T)] = weight;
+            return this;
+        }
+
         protected override IEnumerable<IDashboard> CreateItems(IFactory factory)
         {
             // get the manifest parser just-in-time - injecting it in the ctor would mean that
@@ -32,6 +47,12 @@ namespace Umbraco.Web.Dashboards
 
         private int GetWeight(IDashboard dashboard)
         {
+            var typeOfDashboard = dashboard.GetType();
+            if(_customWeights.ContainsKey(typeOfDashboard))
+            {
+                return _customWeights[typeOfDashboard];
+            }
+
             switch (dashboard)
             {
                 case ManifestDashboard manifestDashboardDefinition: