Centralize legacy brush package export

src/legacy_brush_package_export_services.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "app_core/brush_package_export.h"
+#include "foundation/result.h"
+
+#include <string_view>
+
+class App;
+class NodeDialogExportPPBR;
+
+namespace pp::panopainter {
+
+enum class LegacyBrushPackageExportMode {
+    inline_export_only,
+    desktop_async_close_and_message,
+};
+
+[[nodiscard]] pp::app::BrushPackageExportRequest make_legacy_brush_package_export_request(
+    const NodeDialogExportPPBR& dialog);
+
+[[nodiscard]] pp::foundation::Status execute_legacy_brush_package_export(
+    App& app,
+    NodeDialogExportPPBR& dialog,
+    const pp::app::BrushPackageExportRequest& request,
+    std::string_view path,
+    LegacyBrushPackageExportMode mode);
+
+void complete_legacy_brush_package_export(NodeDialogExportPPBR& dialog, bool saved);
+
+} // namespace pp::panopainter