public MainViewModel(DishWindow dishWindow, IngredientsWindow ingredientsWindow, PreparationWindow preparationWindow)
{
_dinner = new Dinner();
_dishWindow = dishWindow;
_ingredientsWindow = ingredientsWindow;
_preparationWindow = preparationWindow;
_dishViewModel = (DishViewModel) _dishWindow.DataContext;
_ingredientsViewModel = (IngredientsViewModel) _ingredientsWindow.DataContext;
_preparationViewModel = (PreparationViewModel) _preparationWindow.DataContext;
Starters = new ObservableCollection<Dish>();
Mains = new ObservableCollection<Dish>();
Desserts = new ObservableCollection<Dish>();
Menu = new ObservableCollection<Dish>();
_hideErrorTextTimer = new System.Timers.Timer(ErrorTextDisplayTime) {AutoReset = false};
_hideErrorTextTimer.Elapsed += (sender, args) => Application.Current.Dispatcher.Invoke(() => ErrorTextVisible = false);
ShowPreparations = new DelegateCommand(o =>
{
_preparationViewModel.Starter = _dinner.GetSelectedDish(DishType.Starter);
_preparationViewModel.Main = _dinner.GetSelectedDish(DishType.Main);
_preparationViewModel.Dessert = _dinner.GetSelectedDish(DishType.Dessert);
_preparationWindow.Show();
}, o => Menu.Any());
ShowIngredients = new DelegateCommand(o =>
{
_ingredientsViewModel.Ingredients = _dinner.AllIngredients;
_ingredientsWindow.Show();
}, o => Menu.Any());
_dinner.MenuChanged += OnMenuChanged;
_dinner.FilteredDishes += DinnerOnFilteredDishes;
_dinner.ErrorGettingFilteredDishes += DinnerOnErrorGettingFilteredDishes;
_dinner.DishesChanged += OnDishesChanged;
_dinner.NumberOfGuestsChanged += OnNumberOfGuestsChanged;
}