refactor(new_editor): tighten app dependency boundaries

new_editor/app/Platform/Win32/EditorWindow.h

@@ -4,21 +4,61 @@
 #define NOMINMAX
 #endif
 
-#include "Platform/Win32/EditorWindowState.h"
-
-#include <XCEngine/UI/DrawData.h>
+#include "Platform/Win32/EditorWindowPointerCapture.h"
+#include "Platform/Win32/EditorWindowTransferRequests.h"
 
 #include <windows.h>
 
+#include <cstdint>
 #include <filesystem>
-#include <optional>
+#include <memory>
 #include <string>
 #include <string_view>
 #include <vector>
 
+namespace XCEngine::UI {
+
+class UIDrawList;
+
+struct UIPoint;
+struct UIRect;
+struct UIInputEvent;
+struct UIInputModifiers;
+
+enum class UIPointerButton : std::uint8_t;
+enum class UIInputEventType : std::uint8_t;
+
+} // namespace XCEngine::UI
+
+namespace XCEngine::UI::Editor {
+
+class UIEditorWorkspaceController;
+
+struct UIEditorDockHostInteractionState;
+struct UIEditorShellInteractionFrame;
+struct UIEditorShellInteractionState;
+struct UIEditorShellInteractionResult;
+
+namespace Widgets {
+struct UIEditorDockHostDropPreviewState;
+}
+
+} // namespace XCEngine::UI::Editor
+
+namespace XCEngine::UI::Editor::Host {
+
+enum class BorderlessWindowChromeHitTarget : std::uint8_t;
+enum class BorderlessWindowResizeEdge : std::uint8_t;
+
+struct BorderlessWindowChromeLayout;
+
+} // namespace XCEngine::UI::Editor::Host
+
 namespace XCEngine::UI::Editor::App {
 
 class EditorContext;
+class EditorShellRuntime;
+struct EditorWindowState;
 
 namespace Internal {
 class EditorWindowHostRuntime;
@@ -40,6 +80,7 @@ public:
         std::wstring title,
         bool primary,
         UIEditorWorkspaceController workspaceController);
+    ~EditorWindow();
 
     EditorWindow(const EditorWindow&) = delete;
     EditorWindow& operator=(const EditorWindow&) = delete;
@@ -215,11 +256,7 @@ private:
     void UpdateCachedTitleText();
     static bool IsVerboseRuntimeTraceEnabled();
 
-    EditorWindowWindowState m_window = {};
-    EditorWindowRenderState m_render = {};
-    EditorWindowInputState m_input = {};
-    EditorWindowCompositionState m_composition = {};
-    EditorWindowChromeRuntimeState m_chrome = {};
+    std::unique_ptr<EditorWindowState> m_state = {};
 };
 
 } // namespace XCEngine::UI::Editor::App