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import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
public class CheckCombo implements ActionListener
{
private String[] ids;
private Boolean[] values;
private CheckComboStore[] stores;
public CheckCombo(String[] ids,
Boolean[] values) {
this.ids = ids;
this.values = values;
}
public void actionPerformed(ActionEvent e)
{
if(e.getActionCommand().equals("OK")){
System.out.println(stores[0].id+" : "+stores[0].state);
System.out.println(stores[1].id+" : "+stores[1].state);
System.out.println(stores[2].id+" : "+stores[2].state);
System.out.println(stores[3].id+" : "+stores[3].state);
}else{
JComboBox cb = (JComboBox)e.getSource();
CheckComboStore store = (CheckComboStore)cb.getSelectedItem();
CheckComboRenderer ccr = (CheckComboRenderer)cb.getRenderer();
ccr.checkBox.setSelected((store.state = !store.state));
}
}
/**
* Prépare le contenu de la liste déroulante en fonction de la liste donnée en paramètre
* @param ids la liste à ajouter
* @param values les valeurs de cochage initial
* @return
*/
public JPanel getContent()
{
stores = new CheckComboStore[ids.length];
for(int j = 0; j < ids.length; j++)
stores[j] = new CheckComboStore(ids[j], values[j]);
JComboBox combo = new JComboBox(stores);
combo.setRenderer(new CheckComboRenderer());
combo.addActionListener(this);
JPanel panel = new JPanel();
JButton bouton = new JButton("OK");
bouton.addActionListener(this);
panel.add(combo);
panel.add(bouton);
return panel;
}
public static void main(String[] args)
{
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String[] ids = { "north", "west", "south", "east" };
Boolean[] values = {Boolean.TRUE, Boolean.FALSE, Boolean.FALSE, Boolean.FALSE };
f.getContentPane().add(new CheckCombo(ids, values).getContent());
f.setSize(300,160);
f.setLocation(200,200);
f.setVisible(true);
}
}
/** adapted from comment section of ListCellRenderer api */
class CheckComboRenderer implements ListCellRenderer
{
JCheckBox checkBox;
public CheckComboRenderer()
{
checkBox = new JCheckBox();
}
public Component getListCellRendererComponent(JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
{
CheckComboStore store = (CheckComboStore)value;
checkBox.setText(store.id);
checkBox.setSelected(((Boolean)store.state).booleanValue());
checkBox.setBackground(isSelected ? Color.red : Color.white);
checkBox.setForeground(isSelected ? Color.white : Color.black);
return checkBox;
}
}
class CheckComboStore
{
String id;
Boolean state;
public CheckComboStore(String id, Boolean state)
{
this.id = id;
this.state = state;
}
} |
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