Hide number input for mdf2 flags, add copy/paste context menu

Author: kagenocookie

ContentEditor.App/Imgui/Common/CsharpEnumHandler.cs

@@ -96,6 +96,7 @@ public unsafe void OnIMGUI(UIContext context)
         ImguiHelpers.BeginRect();
         if (HideNumberInput) {
             ImGui.Text(context.label + ": ");
+            AppImguiHelpers.ShowJsonCopyPopup<T>(value, context);
         } else if (ImGui.InputScalar(context.label, scalarType, &value)) {
             UndoRedo.RecordSet(context, value);
         }

ContentEditor.App/Imgui/Editors/MdfEditor.cs

@@ -312,6 +312,8 @@ public void OnIMGUI(UIContext context)
             var tex = context.Get<MaterialHeader>();
             var ws = context.GetWorkspace();
             WindowHandlerFactory.SetupObjectUIContext(context, typeof(MaterialHeader), members: DisplayedFields);
+            context.GetChildByValue<MaterialFlags1>()?.uiHandler = new CsharpFlagsEnumFieldHandler<MaterialFlags1, int>() { HideNumberInput = true };
+            context.GetChildByValue<MaterialFlags2>()?.uiHandler = new CsharpFlagsEnumFieldHandler<MaterialFlags2, int>() { HideNumberInput = true };
             context.AddChildContextSetter<MaterialHeader, string>(
                 "MMTR path",
                 tex,