new_editor: stabilize resize lifecycle groundwork

new_editor/app/Platform/Win32/EditorWindowState.h

@@ -6,17 +6,48 @@
 
 #include <windows.h>
 
+#include <cstdint>
 #include <string>
+#include <string_view>
 
 namespace XCEngine::UI::Editor::App {
 
+enum class EditorWindowLifecycleState : std::uint8_t {
+    PendingNativeCreate = 0,
+    NativeAttached,
+    Initializing,
+    Running,
+    Closing,
+    Destroyed,
+};
+
+inline std::string_view GetEditorWindowLifecycleStateName(
+    EditorWindowLifecycleState state) {
+    switch (state) {
+    case EditorWindowLifecycleState::PendingNativeCreate:
+        return "PendingNativeCreate";
+    case EditorWindowLifecycleState::NativeAttached:
+        return "NativeAttached";
+    case EditorWindowLifecycleState::Initializing:
+        return "Initializing";
+    case EditorWindowLifecycleState::Running:
+        return "Running";
+    case EditorWindowLifecycleState::Closing:
+        return "Closing";
+    case EditorWindowLifecycleState::Destroyed:
+        return "Destroyed";
+    }
+
+    return "Unknown";
+}
+
 struct EditorWindowWindowState {
     HWND hwnd = nullptr;
     std::string windowId = {};
     std::wstring title = {};
     std::string titleText = {};
     bool primary = false;
-    bool closing = false;
+    EditorWindowLifecycleState lifecycle = EditorWindowLifecycleState::PendingNativeCreate;
 };
 
 struct EditorWindowState {