Refine editor window architecture

editor/app/Platform/Win32/Windowing/EditorWindowHostRuntime.cpp

@@ -67,9 +67,27 @@ EditorWindowHostRuntime::~EditorWindowHostRuntime() = default;
 EditorWindow* EditorWindowHostRuntime::CreateEditorWindow(
     std::unique_ptr<EditorWindowContentController> contentController,
     const CreateParams& params) {
+    if (contentController == nullptr) {
+        LogRuntimeTrace("window", "window creation failed: content controller is null");
+        return nullptr;
+    }
+
+    const EditorWindowContentCapabilities capabilities =
+        contentController->GetCapabilities();
+    if (params.category == EditorWindowCategory::Workspace && !capabilities.workspace) {
+        LogRuntimeTrace("window", "workspace window creation rejected: content is not workspace");
+        return nullptr;
+    }
+    if (params.category == EditorWindowCategory::Utility && !capabilities.utilityPanel) {
+        LogRuntimeTrace("window", "utility window creation rejected: content is not utility");
+        return nullptr;
+    }
+
     auto windowPtr = std::make_unique<EditorWindow>(
         params.windowId,
         params.title.empty() ? std::wstring(L"XCEngine Editor") : params.title,
+        params.category,
+        params.chromePolicy,
         params.primary,
         std::move(contentController));
     EditorWindow* const rawWindow = windowPtr.get();
@@ -88,11 +106,14 @@ EditorWindow* EditorWindowHostRuntime::CreateEditorWindow(
     };
 
     m_pendingCreateWindow = rawWindow;
+    const DWORD windowStyle = params.nativeStylePolicy.useHostWindowStyle
+        ? m_hostConfig.windowStyle
+        : params.nativeStylePolicy.windowStyle;
     const HWND hwnd = CreateWindowExW(
-        WS_EX_APPWINDOW,
+        params.nativeStylePolicy.extendedWindowStyle,
         m_hostConfig.windowClassName,
         rawWindow->GetTitle().c_str(),
-        m_hostConfig.windowStyle,
+        windowStyle,
         params.initialX,
         params.initialY,
         params.initialWidth,