private void OnDecreaseQuantity()
{
if (SelectedOrderItem == null)
{
MessageBox.Show("Select item to decrease quantity");
return;
}
//Check if the product was already selected
if (OrderItems.Any(p => p.UPCCode == SelectedOrderItem.UPCCode))
{
if (OrderItems.First(p => p.UPCCode == SelectedOrderItem.UPCCode).Quantity <= 1)
{
if (SelectedOrderItem != null)
{
MessageBoxResult result = MessageBox.Show("You are about to delete an item. Do you want to continue?", "Delete Item", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (result == MessageBoxResult.Yes)
{
OrderItems.Remove(SelectedOrderItem);
}
;
}
}
else
{
OrderItems.First(p => p.UPCCode == SelectedOrderItem.UPCCode).Quantity -= 1;
RaisePropertyChanged("OrderSubTotal");
RaisePropertyChanged("OrderTax");
RaisePropertyChanged("BalanceDue");
}
}
}
// Other stuff
public void RemoveOrderItem(int orderItemId)
{
var orderItemToRemove = OrderItems.First(oi => oi.Id == orderItemId)
OrderItems.Remove(orderItemToRemove);
DomainEvents.Raise(new OrderItemRemoved(orderItemToRemove));
}
/// <summary>
/// First init
/// </summary>
private void Init()
{
// Set VM to this
VM = this;
// Get the current dispatcher
this.ThisDispatcher = Dispatcher.CurrentDispatcher;
// Skip if the list is empy
if (DatabaseHelpers.AllProducts != null)
{
// Load products from the Database class
PagedProducts = new ThreadSafeObservableCollection <OrderItemViewModel>(
DatabaseHelpers.AllProducts.Where(
p => p.Type == CurrentMenu));
}
else
{
throw new Exception("List is null");
}
/// <summary>
/// Create all commands associated with
/// this View
/// </summary>
#region Create Commands
// Create the command for the category buttons
CategorySelectCommand = new RelayCommand(CategoryChanged);
// Create the command for the Add Product buttons
AddProductCommand = new RelayCommand(AddProduct);
// Create the command for 'RemoveProduct' buttons
RemoveProductCommand = new RelayCommand((o) => { OrderItems.Remove(OrderItems.First(i => i.BasketID.Equals((int)o))); });
// Create the command for the 'Cancel' button
CancelCommand = new RelayCommand((o) => { MainWindowViewModel.VM.CurrentScreen = MainPages.WellcomeScreen; });
// Create the command for the 'Cancel' button
PayCommand = new RelayCommand((o) => { SubPage = OrderSubPages.PaymentPage; });
// Create the command for the 'Edit' buttons
EditObjectCommand = new RelayCommand((o) => { SelectedItem = OrderItems.First(i => i.BasketID.Equals((int)o)).Copy();
SubPage = OrderSubPages.EditObjectPage; });
#endregion
// Set the first food menu
CurrentMenu = Enums.Extra;
// Reset the static properties for the order
OrderItems = new ObservableCollection <OrderItemViewModel>();
// Create the event for the collection
OrderItems.CollectionChanged += OrderItems_CollectionChanged;
// Call it once to set price string to '0'
OrderItems_CollectionChanged(null, null);
}
public void AddOrderItem(Book book, int quantity, decimal price)
{
if (!OrderItems.Any(oi => oi.BookOrdered.BookId == book.Id))
{
_orderItems.Add(new OrderItem(
quantity,
price,
new BookItemSnapshot(book.Id, book.Title, book.ImageUrl))
);
return;
}
var existingItem = OrderItems.First(oi => oi.BookOrdered.BookId == book.Id);
existingItem.Quantity += quantity;
}
private void ReceiveMessage(Product product)
{
//Check if the product was already selected
if (OrderItems.Any(p => p.UPCCode == product.UPCCode))
{
OrderItems.First(p => p.UPCCode == product.UPCCode).Quantity += 1;
RaisePropertyChanged("OrderSubTotal");
RaisePropertyChanged("OrderTax");
RaisePropertyChanged("BalanceDue");
}
else
{
OrderItems.Add(new POS_DataLibrary.OrderItems
{
UPCCode = product.UPCCode,
CategoryName = product.CategoryName.ToString(),
CategoryId = product.CategoryId,
Quantity = 1,
Price = product.Price,
Name = product.Name
});
}
}
public OrderItem GetOrderItemBySku(string sku) => OrderItems.First(oi => string.Equals(oi.ProductOption.Sku.ToUpper(), sku.ToUpper()));