bool ConvertToSuitableChild(Unit iterator, decimal value, out decimal result)
{
result = value;
var query = from child in iterator.Children where child == _toUnit select child;
var unit = query.FirstOrDefault();
if (unit != null)
{
result = result*unit.FactorToParent;
return true;
}
foreach (var child in iterator.Children)
{
if (child.FactorToParent == 0m)
{
result = -1m;
return true;
}
decimal subresult;
if (ConvertToSuitableChild(child, result * child.FactorToParent, out subresult))
{
result = subresult;
return true;
}
}
return false;
}
public EditStockMovementItem(RecipeableItem itemToBook, Unit unitToBook)
{
ItemToBook = itemToBook;
UnitToBook = unitToBook;
QuantityToBook = 0.0m;
QuantityLeft = 0.0m;
}
public StockItem BookItemOutOfStock(Stock stock, decimal quantity, Unit unit, RecipeableItem recipeableItem)
{
if (stock == null)
throw new ArgumentNullException("stock");
var stockItem = FindStockItem(stock, unit, recipeableItem, stock.IsMainStock);
var bookQuantity = _unitConverter.Convert(quantity, unit, stockItem.Unit);
stockItem.Quantity -= bookQuantity;
return stockItem;
}
internal StockItem FindStockItem(Stock stock, Unit unit, RecipeableItem recipeableItem, bool createIfNotExists)
{
if (recipeableItem == null)
throw new ArgumentNullException("recipeableItem");
if (unit == null)
throw new ArgumentNullException("unit");
var stockItem = stock.StockItems.Where(x => x.RecipeableItem == recipeableItem).FirstOrDefault();
if (stockItem == null)
{
if( !createIfNotExists )
throw new InvalidOperationException();
stockItem = new StockItem { RecipeableItem = recipeableItem, Unit = unit };
stock.AddStockItem(stockItem);
}
return stockItem;
}
public decimal Convert(decimal value, Unit from, Unit to)
{
if( from==to )
return value;
if( from==null || to==null )
throw new InvalidUnitException();
_fromUnit = from;
_toUnit = to;
_value = value;
decimal result;
if (ConvertToParent(out result))
return result;
if (ConvertToChild(out result))
return result;
throw new UnitNotConvertableException();
}
void OnUnitChanged(Unit unit)
{
var viewmodel = (from vm in AllUnits where vm.Id == unit.Id select vm).FirstOrDefault();
if (viewmodel == null)
{
viewmodel = new SingleUnitViewModel(unit);
AllUnits.Add(viewmodel);
}
else
{
viewmodel.ExchangeData(unit);
}
OnPropertyChanged("ItemSelected");
OnPropertyChanged("ItemsSelected");
}
public new StockItem FindStockItem(Stock stock, Unit unit, RecipeableItem recipeableItem, bool createIfNotExists)
{
return base.FindStockItem(stock, unit, recipeableItem, createIfNotExists);
}
public SingleUnitViewModel(Unit unit)
{
_unit = unit;
base.DisplayName = unit.Name;
}
public void ExchangeData(Unit unit)
{
_unit = unit;
}
public EditUnit(Unit unit)
{
Unit = unit;
FactorToParentString = FactorToParent;
}
public virtual void RemoveChild(Unit unit)
{
_children.Remove(unit);
}
public virtual void AddChild(Unit unit)
{
_children.Add(unit);
}