public ShoppingList()
{
this.InitializeComponent();
ViewModel = new ShoppingListViewModel(ServiceRegistrar.ShoppingService(App.SqliteConnection));
ShoppingListView.ItemsSource = ViewModel.Items;
// Developer will want to return to none selection when selected items are zero
ShoppingListView.SelectionChanged += OnSelectionChanged;
// With this property we enable that the left edge tap visual indicator shows
// when user press the listviewitem left edge
// and also the ItemLeftEdgeTapped event will be fired
// when user releases the pointer
ShoppingListView.IsItemLeftEdgeTapEnabled = true;
// This is event that will be fired when user releases the pointer after
// pressing on the left edge of the ListViewItem
ShoppingListView.ItemLeftEdgeTapped += OnEdgeTapped;
// We set the state of the commands on the appbar
SetCommandsVisibility(ShoppingListView);
// This is how devs can handle the back button
SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
this._inflater = inflater;
View view = inflater.Inflate(Resource.Layout.ic_tab_shopping_list, null);
ViewModel = new ShoppingListViewModel(ServiceRegistrar.ShoppingService(MainActivity.SqliteConnection));
_shoppingListView = view.FindViewById<ListView>(Resource.Id.ShoppingListView);
var newItemEditText = view.FindViewById<EditText>(Resource.Id.NewItemEditText);
Button addItemButton = view.FindViewById<Button>(Resource.Id.AddButton);
_shoppingListView.Adapter = ViewModel.Items.GetAdapter(GetItemView);
addItemButton.Click += delegate
{
var title = newItemEditText.Text;
if (!string.IsNullOrEmpty(title))
{
ViewModel.Add(new Item(title));
}
newItemEditText.Text = "";
};
_shoppingListView.ItemClick += delegate (object sender, AdapterView.ItemClickEventArgs e)
{
ViewModel.Remove(this.ViewModel.Items.ElementAt(e.Position));
};
return view;
}
void Should_Be_Able_To_Add_Item()
{
// Arrange
var shoppingService = new ShoppingService(_sqliteConnection);
var vm = new ShoppingListViewModel(shoppingService);
var item = new Item("some bought item");
// Act
vm.Add(item);
// Assert
Assert.Contains<Item>(vm.Items, x => x == item);
Assert.Contains<Item>(shoppingService.Items, x => x == item);
}
public ShoppingListTableSource()
{
ViewModel = new ShoppingListViewModel(ServiceRegistrar.ShoppingService(Application.SqliteConnection));
}