public Boolean Unlock(LockableBinaryNode node)
{
if (node.CanLockedOrUnLocked())
{
node.IsLocked = false;
LockableBinaryNode current = node.Parent;
while (current != null)
{
current.LockedDecendanteCount--;
current = current.Parent;
}
return(true);
}
return(false);
}
private Boolean CanLockedOrUnLocked()
{
if (LockedDecendanteCount > 0)
{
return(false);
}
LockableBinaryNode current = Parent;
while (current != null)
{
if (current.IsLocked)
{
return(false);
}
current = current.Parent;
}
return(true);
}