public DefaultPieDataset(KeyedValues data)
{
DefaultPieDataset defaultPieDataset = this;
if (data == null)
{
string str = "Null 'data' argument.";
Throwable.__\u003CsuppressFillInStackTrace\u003E();
throw new IllegalArgumentException(str);
}
else
{
this.data = new DefaultKeyedValues();
for (int i = 0; i < data.getItemCount(); ++i)
this.data.addValue(data.getKey(i), data.getValue(i));
}
}