modernkeepass/ModernKeePass/Views/MainPage.xaml.cs

using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
using ModernKeePass.Domain.Dtos;
using ModernKeePass.ViewModels;
using ModernKeePass.ViewModels.ListItems;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace ModernKeePass.Views
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainPage
    {
        public new MainVm Model => (MainVm) DataContext;

        public MainPage()
        {
            InitializeComponent();
            ListView       = MenuListView;
            ListViewSource = MenuItemsSource;
        }

        private new void ListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            base.ListView_SelectionChanged(sender, e);

            var selectedItem = Model.SelectedItem as MainMenuItemVm;
            if (selectedItem == null)
            {
                MenuFrame.Navigate(typeof(WelcomePage));
            }
            else
            {
                selectedItem.Destination.Navigate(selectedItem.PageType, selectedItem.Parameter);
            }
        }

        protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);
            FileInfo file;
            if (e.NavigationMode == NavigationMode.Back)
            {
                file = null;
            }
            else
            {
                file = e.Parameter as FileInfo;
            }

            await Model.Initialize(Frame, MenuFrame, file);
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            base.OnNavigatedFrom(e);
            Model.Cleanup();
        }
    }
}