// This is instead of the RemoveProduct method in the specification
protected override void RemoveItem(int index)
{
BasketItem item = base.Items[index];
if (item.Offer != null)
{
item.Offer.Products.Remove(item.ProductID);
item.Offer.Quantity -= item.Quantity;
OfferList.Remove(item);
}
base.RemoveItem(index);
}
// This is instead of the ClearBasket method in the specification
protected override void ClearItems()
{
foreach (BasketItem item in base.Items)
{
if (item.Offer != null)
{
item.Offer.Products.Remove(item.ProductID);
item.Offer.Quantity -= item.Quantity;
OfferList.Clear();
}
}
base.ClearItems();
}
// This is instead of the AddProduct method in the specification
protected override void InsertItem(int index, BasketItem item)
{
// If the Keyed Collection already has the product
// then just increment its quantity
if (this.Contains(item.ProductID))
{
this[item.ProductID].Quantity += item.Quantity;
OfferList.Add(item);
OfferList.CalculateOffers(this);
}
else
{
base.InsertItem(index, item);
OfferList.Add(item);
OfferList.CalculateOffers(this);
}
}