package jas.util;
import java.awt.Choice;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
class ChoiceFieldBinding extends FieldBinding implements ItemListener
{
ChoiceFieldBinding(Choice field)
{
m_field = field;
field.addItemListener(this);
}
void set(Object value) throws UnsupportedType
{
if (!(value instanceof Integer)) throw new UnsupportedType(m_field,value.getClass());
int x = ((Integer) value).intValue();
if (x != m_oldVal)
{
m_field.select(x);
m_oldVal = x;
}
}
Object get(Class type) throws UnsupportedType
{
if (type != Integer.TYPE) throw new UnsupportedType(m_field,type);
int x = m_field.getSelectedIndex();
return new Integer(x);
}
public void itemStateChanged(ItemEvent e)
{
int x = m_field.getSelectedIndex();
if (x != m_oldVal) setChanged();
notifyObservers();
}
protected void reset()
{
super.reset();
m_oldVal = m_field.getSelectedIndex();
}
private int m_oldVal = 0;
private Choice m_field;
}