| 1 | // Copyright (C) Microsoft Corporation. All rights reserved. |
| 2 | |
| 3 | using CommunityToolkit.Mvvm.ComponentModel; |
| 4 | using Microsoft.UI.Xaml.Navigation; |
| 5 | using WslSettings.Contracts.Services; |
| 6 | |
| 7 | namespace WslSettings.ViewModels; |
| 8 | |
| 9 | public partial class ShellViewModel : ObservableRecipient |
| 10 | { |
| 11 | private bool isBackEnabled; |
| 12 | private object? selected; |
| 13 | |
| 14 | public bool IsBackEnabled |
| 15 | { |
| 16 | get => isBackEnabled; |
| 17 | set => SetProperty(ref isBackEnabled, value); |
| 18 | } |
| 19 | |
| 20 | public object? Selected |
| 21 | { |
| 22 | get => selected; |
| 23 | set => SetProperty(ref selected, value); |
| 24 | } |
| 25 | |
| 26 | public INavigationService NavigationService |
| 27 | { |
| 28 | get; |
| 29 | } |
| 30 | |
| 31 | public INavigationViewService NavigationViewService |
| 32 | { |
| 33 | get; |
| 34 | } |
| 35 | |
| 36 | public ShellViewModel(INavigationService navigationService, INavigationViewService navigationViewService) |
| 37 | { |
| 38 | NavigationService = navigationService; |
| 39 | NavigationService.Navigated += OnNavigated; |
| 40 | NavigationViewService = navigationViewService; |
| 41 | } |
| 42 | |
| 43 | private void OnNavigated(object sender, NavigationEventArgs e) |
| 44 | { |
| 45 | IsBackEnabled = NavigationService.CanGoBack; |
| 46 | var selectedItem = NavigationViewService.GetSelectedItem(e.SourcePageType); |
| 47 | if (selectedItem != null) |
| 48 | { |
| 49 | Selected = selectedItem; |
| 50 | } |
| 51 | } |
| 52 | } |