public void RemoveItem(IoDescriptionItem item)
{
if (this.items.ContainsKey(item.Address))
{
this.items.Remove(item.Address);
this.PerformPropertyChanged("Items");
}
}
public void AddItem(IoDescriptionItem item)
{
if (item.Address < 0 || item.Address > (this.size - 1))
{
throw new ArgumentOutOfRangeException("address");
}
if (item == null)
{
throw new ArgumentNullException("item");
}
int start = item.Address;
int end = start + item.Size;
this.items.Add(item.Address, item);
this.PerformPropertyChanged("Items");
}
public IoDescriptionItem GetItemAtAddress(int address)
{
IoDescriptionItem item = null;
for (int i = address; i >= 0; i--)
{
if (this.items.ContainsKey(i))
{
if (address == this.items[i].Address ||
address < (this.items[i].Address + this.items[i].Size))
{
item = items[i];
}
break;
}
}
return(item);
}
public void MoveItem(IoDescriptionItem item, int newAddress)
{
if (!items.ContainsKey(item.Address))
{
throw new ArgumentException("The item is not part of the description", "item");
}
if (newAddress < 0)
{
throw new ArgumentException("Address can not be smaller than 0", "address");
}
if (newAddress + item.Size > this.Size)
{
throw new ArgumentException("Address plus item size is larger than description size", "address");
}
if (item.Address == newAddress)
{
return;
}
IoDescriptionItem nextItem = items.FirstOrDefault(x => x.Key >= newAddress && x.Key != item.Address).Value;
if (items.ContainsKey(newAddress) || (nextItem != null && nextItem.Address <= (newAddress + (item.Size - 1))))
{
throw new InvalidOperationException("Destination of item is not empty");
}
IoDescriptionItem itemBefore = items.LastOrDefault(x => x.Key <= newAddress && x.Key != item.Address).Value;
if ((itemBefore != null && (itemBefore.Address + (itemBefore.Size - 1) >= newAddress)))
{
throw new InvalidOperationException("Destination of item is not empty");
}
items.Remove(item.Address);
item.Address = newAddress;
items.Add(item.Address, item);
this.PerformPropertyChanged("Items");
}
