/// <summary>
/// Determines the sort priority based on item type.
/// </summary>
/// <param name="item">The item to get sort priority for.</param>
/// <param name="treatChildAsParent">If true, child items are treated as products. If false, the sort priority is based on the type of the child item.</param>
/// <returns>An integer indicating the sort priority, lower values should appear before higher values.</returns>
public int GetSortPriority(BasketItem item, bool treatChildAsParent)
{
OrderItemType checkType;
if (treatChildAsParent && item.IsChildItem)
{
checkType = item.GetParentItem(true).OrderItemType;
}
else
{
checkType = item.OrderItemType;
}
switch (checkType)
{
case OrderItemType.Product:
return(0);
case OrderItemType.Discount:
return(1);
case OrderItemType.GiftWrap:
return(2);
case OrderItemType.Shipping:
return(3);
case OrderItemType.Handling:
return(4);
case OrderItemType.Coupon:
return(5);
case OrderItemType.Tax:
return(6);
case OrderItemType.Charge:
return(7);
case OrderItemType.Credit:
return(8);
default:
return(9);
}
}
/// <summary>
/// Compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other.
/// </summary>
/// <param name="x">The first object to compare.</param>
/// <param name="y">The second object to compare.</param>
/// <returns>Less than zero if x is less than y. <br/>
/// Zero of x equals y.<br/>
/// Greater than zero if x is greater than y.<br/>
/// </returns>
public int Compare(object x, object y)
{
BasketItem item1 = x as BasketItem;
BasketItem item2 = y as BasketItem;
// COMPARING WITH YOUR OWN CHILD
if (item1.IsChildItem && item1.ParentItemId == item2.BasketItemId)
{
return(1);
}
// COMPARING WITH YOUR OWN PARENT
if (item2.IsChildItem && item2.ParentItemId == item1.BasketItemId)
{
return(-1);
}
// USE SORT PRIORITY, TREAT CHILD ITEMS AS PRODUCTS
int item1Priority = GetSortPriority(item1, true);
int item2Priority = GetSortPriority(item2, true);
int result = item1Priority.CompareTo(item2Priority);
if (result != 0)
{
return(result);
}
// SORT BY ROOT PARENT ID TO GROUP ALL RELATED PRODUCTS
int item1CompareId = item1.GetParentItem(true).BasketItemId;
int item2CompareId = item2.GetParentItem(true).BasketItemId;
result = item1CompareId.CompareTo(item2CompareId);
if (result != 0)
{
return(result);
}
// SORT BY BY ITEM ID, BUT USE PARENT IDS FOR TAXES
if (item1.IsChildItem && item1.OrderItemType == OrderItemType.Tax)
{
item1CompareId = item1.ParentItemId;
}
else
{
item1CompareId = item1.BasketItemId;
}
if (item2.IsChildItem && item2.OrderItemType == OrderItemType.Tax)
{
item2CompareId = item2.ParentItemId;
}
else
{
item2CompareId = item2.BasketItemId;
}
result = item1CompareId.CompareTo(item2CompareId);
if (result != 0)
{
return(result);
}
// USE SORT PRIORITY AND DO NOT GIVE SPECIAL HANDLING FOR CHILD ITEMS
item1Priority = GetSortPriority(item1, false);
item2Priority = GetSortPriority(item2, false);
result = item1Priority.CompareTo(item2Priority);
if (result != 0)
{
return(result);
}
// FINALLY RESORT TO ORDER BY VALUES
result = item1.OrderBy.CompareTo(item2.OrderBy);
return(result);
}