Method OnNavigatedTo

Maple.App/EditPage.cpp:21–46

    }

    fire_and_forget EditPage::OnNavigatedTo(NavigationEventArgs const& e) {
        try {
            const auto lifetime = get_strong();
            const auto& param = e.Parameter().as<Maple_App::ConfigViewModel>();

            m_file = param.File();
            try {
                const auto& text = co_await FileIO::ReadTextAsync(param.File(), UnicodeEncoding::Utf8);
                EditBox().Document().SetText(TextSetOptions::None, text);
            }
            catch (const winrt::hresult_error&) {
                EditBox().Document().SetText(TextSetOptions::None, L"Invalid configuration file");
            }
            const auto weakThis = lifetime->get_weak();
            m_saveModifiedContent = [weakThis]() -> IAsyncAction {
                if (const auto self{ weakThis.get() }) {
                    return self->SaveDocument();
                }
                return {};
            };
        }
        catch (...)
        {
            UI::NotifyException(L"Failed to load file");
        }
    }
    void EditPage::OnNavigatingFrom(NavigatingCancelEventArgs const&) {
        if (m_file == nullptr || !m_file.IsAvailable()) {
            return;