//// ===========================================================================================================
//// 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;
}