feat(new_editor): add standalone add-component utility window

new_editor/app/Platform/Win32/EditorAddComponentUtilityWindowContentController.cpp

@@ -0,0 +1,51 @@
+#include "Platform/Win32/EditorAddComponentUtilityWindowContentController.h"
+
+#include <XCEngine/UI/DrawData.h>
+
+namespace XCEngine::UI::Editor::App {
+
+EditorAddComponentUtilityWindowContentController::
+    EditorAddComponentUtilityWindowContentController(
+        const ::XCEngine::UI::UISize& minimumOuterSize)
+    : EditorStandaloneUtilityWindowContentController(minimumOuterSize) {}
+
+EditorAddComponentUtilityWindowContentController::
+    ~EditorAddComponentUtilityWindowContentController() = default;
+
+void EditorAddComponentUtilityWindowContentController::OnShutdown() {
+    m_addComponentPanel.ResetInteractionState();
+}
+
+void EditorAddComponentUtilityWindowContentController::OnResetInteractionState() {
+    m_addComponentPanel.ResetInteractionState();
+}
+
+EditorWindowFrameTransferRequests
+EditorAddComponentUtilityWindowContentController::UpdateStandaloneContent(
+    const EditorStandaloneUtilityWindowFrameContext& context,
+    ::XCEngine::UI::UIDrawData& drawData) {
+    m_addComponentPanel.Update(
+        context.editorContext,
+        AddComponentPanelHostContext{
+            .mounted = true,
+            .bounds = context.bounds,
+            .focused = context.focused,
+            .focusGained = context.focusGained,
+            .focusLost = context.focusLost,
+        },
+        context.inputEvents);
+
+    ::XCEngine::UI::UIDrawList& drawList =
+        drawData.EmplaceDrawList("XCEditorUtility.AddComponent");
+    m_addComponentPanel.Append(drawList);
+    return {};
+}
+
+std::unique_ptr<EditorWindowContentController>
+CreateEditorAddComponentUtilityWindowContentController(
+    const ::XCEngine::UI::UISize& minimumOuterSize) {
+    return std::make_unique<EditorAddComponentUtilityWindowContentController>(
+        minimumOuterSize);
+}
+
+} // namespace XCEngine::UI::Editor::App