//// =========================================================================================================== //// Member Variables //// =========================================================================================================== //// =========================================================================================================== //// Constructors //// =========================================================================================================== public HomePageViewModel(INavigationViewService navigationService) { Param.VerifyNotNull(navigationService, nameof(navigationService)); CategoryClick = new RelayCommand <HomePageCategory>( category => navigationService.NavigateTo( typeof(CategoryPageViewModel), category.Category.ToString())); }
//// =========================================================================================================== //// Constructors //// =========================================================================================================== public TitleBarViewModel(INavigationViewService navigationViewService) { _navigationViewService = Param.VerifyNotNull(navigationViewService, nameof(navigationViewService)); _navigationViewService.BackStackDepthChange += OnBackStackDepthChange; _backCommand = new RelayCommand(ExecuteBackAction, CanGoBack); }
//// =========================================================================================================== //// Constructors //// =========================================================================================================== public CategoryPageNavigationViewModel( INavigationViewService navigationViewService, CategoryKind categoryKind, string groupName, IEnumerable <CategoryPageNavigationItem> settings = null) { Param.VerifyNotNull(navigationViewService, nameof(navigationViewService)); CategoryKind = categoryKind; GroupName = Param.VerifyString(groupName, nameof(groupName)); Settings = new ReadOnlyCollection <CategoryPageNavigationItem>(settings?.ToList() ?? new List <CategoryPageNavigationItem>()); IsGrouped = Settings.Any(vm => vm.HeaderDisplayName != null); GroupedSettings = Settings.GroupBy( setting => setting.HeaderDisplayName, (key, items) => new CategoryPageNavigationGroupedItem(key, items)); HomeCommand = new RelayCommand(() => navigationViewService.NavigateTo(typeof(HomePageViewModel), null)); }
public ShellViewModel(INavigationService navigationService, INavigationViewService navigationViewService) { NavigationService = navigationService; NavigationService.Navigated += OnNavigated; NavigationViewService = navigationViewService; }