public SalesItem(SalesItem item)
{
Name = item.Name;
Price = item.Price;
Quantity = item.Quantity;
Imported = item.Imported;
SalesTaxed = item.SalesTaxed;
}
public SalesViewModel()
{
ShoppingList = new ObservableCollection <SalesItem>();
Items = new SalesItem().CreateDefaultItems();
Receipt = new ObservableCollection <string>();
NewItem = new SalesItem("", 0m, 1, false, false);
ShouldShowCleaningButton = false;
}
private decimal CalculateItemTax(SalesItem item, decimal rate)
{
var minimumUnit = 0.05M;
var taxBaseValue = item.Price * rate;
var taxValue = taxBaseValue + minimumUnit;
var remainder = taxBaseValue % minimumUnit;
if (remainder == 0)
{
remainder = minimumUnit;
}
return(taxValue - remainder);
}
private void AddItemToShoppingList(SalesItem item)
{
var matchingItem = ShoppingList.Where(x => x.Name.Contains(item.Name)).FirstOrDefault();
if (matchingItem != null)
{
matchingItem.Quantity += 1;
var s = ShoppingList;
}
else
{
ShoppingList.Add(new SalesItem(item));
}
}
private void RemoveItemFromShoppingList(SalesItem item)
{
var matchingItem = ShoppingList.Where(x => x.Name.Contains(item.Name)).FirstOrDefault();
if (matchingItem == null)
{
return;
}
else if (matchingItem != null && matchingItem.Quantity > 1)
{
matchingItem.Quantity -= 1;
}
else if (matchingItem.Quantity == 1)
{
ShoppingList.Remove(item);
}
}
