Function OpenPreferred

src/openrct2-ui/interface/FileBrowser.cpp:48–86

    static bool _loadSaveCallbackIsJs = false;

    WindowBase* OpenPreferred(
        LoadSaveAction action, LoadSaveType type, u8string defaultPath, LoadSaveCallback callback, bool isJsCallback,
        TrackDesign* trackDesign)
    {
#ifdef __EMSCRIPTEN__
        if (action == LoadSaveAction::save)
        {
            Select("/save.park", action, type, trackDesign);
            EmscriptenSaveGame(type == LoadSaveType::track, false, type);
        }
        else
        {
            EmscriptenLoadGame(type);
        }
        return nullptr;
#endif

        auto hasFilePicker = GetContext()->GetUiContext().HasFilePicker();
        auto& config = Config::Get().general;

        // Open system file picker?
        if (config.useNativeBrowseDialog && hasFilePicker)
        {
            const bool isSave = (action == LoadSaveAction::save);
            const auto defaultDirectory = GetDir(type);

            RegisterCallback(callback, isJsCallback);
            const u8string path = OpenSystemFileBrowser(isSave, type, defaultDirectory, defaultPath, trackDesign);
            if (!path.empty())
            {
                Select(path.c_str(), action, type, trackDesign);
            }
            UnregisterJSCallback();
            return nullptr;
        }

        // Use built-in load/save window
        return Windows::LoadsaveOpen(action, type, defaultPath, callback, isJsCallback, trackDesign);
    }

    bool ListItemSort(LoadSaveListItem& a, LoadSaveListItem& b)
    {