private void ProductRemovedFromCartHandler(InBookBlockPvmByTransaction bookBlock)
{
// -- Remove the from-cart-removed book from the correspondent Cart
UserOrderPlvmWp cartRemovedFrom = null;
var wasAroundEnd = false;
foreach (var userOrderPlvmWp in Carts)
{
var indexOfRemoved = userOrderPlvmWp.Products.IndexOf(bookBlock);
if (indexOfRemoved >= 0)
{
cartRemovedFrom = userOrderPlvmWp;
wasAroundEnd = (userOrderPlvmWp.Products.Count - indexOfRemoved) <= 3; // index is zero based
userOrderPlvmWp.Products.RemoveAt(indexOfRemoved);
break;
}
}
// If we could not remove the item, something went wrong
if (cartRemovedFrom == null)
{
throw new Exception();
}
// If the removed item was one of the last 2 books in the last cart, because of a Framework bug,
// the screen will be empty. The reason is only, we got out from the visible area,
// so we have to scroll up a bit
var isBigEnough = cartRemovedFrom.Products.Count >= 3; // the item is already removed
var isLastCart = Carts[Carts.Count - 1] == cartRemovedFrom;
if (wasAroundEnd && isLastCart && isBigEnough)
{
LongListSelectorCarts.ScrollTo(cartRemovedFrom);
}
// If the cart became empty
if (cartRemovedFrom.Products.Count == 0)
{
Carts.Remove(cartRemovedFrom);
}
}
private void ExchangeProductRemovedHandler(InBookBlockPvmByTransaction bookBlock)
{
InProgressSells.First(userOrderPlvmWp => userOrderPlvmWp.ExchangeProducts.Remove(bookBlock));
}
