Reapply "Remove some BUI boilerplate" (#30214) (#30219)

* Reapply "Remove some BUI boilerplate" (#30214)

This reverts commit cb0ba66be3.

* Fix gas tank

* Fix PA

* Fix microwave

* Comms console underwrap

* Fix rcd

* log wehs

Content.Client/Construction/UI/FlatpackCreatorBoundUserInterface.cs

@@ -1,5 +1,6 @@
 using Content.Shared.Construction.Components;
 using JetBrains.Annotations;
+using Robust.Client.UserInterface;
 
 namespace Content.Client.Construction.UI
 {
@@ -17,8 +18,8 @@ namespace Content.Client.Construction.UI
         {
             base.Open();
 
-            _menu = new FlatpackCreatorMenu(Owner);
-            _menu.OnClose += Close;
+            _menu = this.CreateWindow<FlatpackCreatorMenu>();
+            _menu.SetEntity(Owner);
 
             _menu.PackButtonPressed += () =>
             {
@@ -27,14 +28,5 @@ namespace Content.Client.Construction.UI
 
             _menu.OpenCentered();
         }
-
-        protected override void Dispose(bool disposing)
-        {
-            base.Dispose(disposing);
-            if (!disposing)
-                return;
-
-            _menu?.Dispose();
-        }
     }
 }

Content.Client/Construction/UI/FlatpackCreatorMenu.xaml.cs

@@ -24,7 +24,7 @@ public sealed partial class FlatpackCreatorMenu : FancyWindow
     private readonly FlatpackSystem _flatpack;
     private readonly MaterialStorageSystem _materialStorage;
 
-    private readonly EntityUid _owner;
+    private EntityUid _owner;
 
     [ValidatePrototypeId<EntityPrototype>]
     public const string NoBoardEffectId = "FlatpackerNoBoardEffect";
@@ -33,7 +33,7 @@ public sealed partial class FlatpackCreatorMenu : FancyWindow
 
     public event Action? PackButtonPressed;
 
-    public FlatpackCreatorMenu(EntityUid uid)
+    public FlatpackCreatorMenu()
     {
         RobustXamlLoader.Load(this);
         IoCManager.InjectDependencies(this);
@@ -42,14 +42,17 @@ public sealed partial class FlatpackCreatorMenu : FancyWindow
         _flatpack = _entityManager.System<FlatpackSystem>();
         _materialStorage = _entityManager.System<MaterialStorageSystem>();
 
-        _owner = uid;
-
         PackButton.OnPressed += _ => PackButtonPressed?.Invoke();
 
-        MaterialStorageControl.SetOwner(uid);
         InsertLabel.SetMarkup(Loc.GetString("flatpacker-ui-insert-board"));
     }
 
+    public void SetEntity(EntityUid uid)
+    {
+        _owner = uid;
+        MaterialStorageControl.SetOwner(uid);
+    }
+
     protected override void FrameUpdate(FrameEventArgs args)
     {
         base.FrameUpdate(args);