Method DrawFileMenu

Engine/Editor/Source/UI/EditorUI.cpp:2246–2334

        auto AnyClosableIn = [this, &Order, Count](int32 First, int32 Last, int32 Skip) -> bool
        {
            for (int32 i = eastl::max(0, First); i <= Last && i < Count; ++i)
            {
                if (i != Skip && CanCloseTool(Order[i]))
                {
                    return true;
                }
            }
            return false;
        };

        auto CloseRange = [this, &Order, Count](int32 First, int32 Last, int32 Skip)
        {
            for (int32 i = eastl::max(0, First); i <= Last && i < Count; ++i)
            {
                if (i != Skip)
                {
                    RequestCloseTool(Order[i]);
                }
            }
        };

        if (ImGui::MenuItem(LE_ICON_CLOSE " Close", nullptr, false, CanCloseTool(EditorTool)))
        {
            RequestCloseTool(EditorTool);
        }

        if (ImGui::MenuItem("Close Others", nullptr, false, SelfIndex >= 0 && AnyClosableIn(0, Count - 1, SelfIndex)))
        {
            CloseRange(0, Count - 1, SelfIndex);
        }

        if (ImGui::MenuItem("Close to the Right", nullptr, false, SelfIndex >= 0 && AnyClosableIn(SelfIndex + 1, Count - 1, -1)))
        {
            CloseRange(SelfIndex + 1, Count - 1, -1);
        }

        ImGui::Separator();

        if (ImGui::MenuItem("Close All", nullptr, false, AnyClosableIn(0, Count - 1, -1)))
        {
            CloseRange(0, Count - 1, -1);
        }

        ImGui::EndPopup();
    }

    void FEditorUI::DrawToolContents(const FUpdateContext& UpdateContext, FEditorTool* Tool)
    {
        LUMINA_PROFILE_SCOPE();

        // This is the second Begin(), as SubmitToolMainWindow() has already done one
        // (Therefore only the p_open and flags of the first call to Begin() applies)
        ImGui::Begin(Tool->GetToolName().c_str());
        
        ASSERT(ImGui::GetCurrentWindow()->BeginCount == 2);
        
        const ImGuiID dockspaceID = Tool->GetCurrentDockspaceID();
        const ImVec2 DockspaceSize = ImGui::GetContentRegionAvail();