FileDocCategorySizeDatePackage
SelectionMonitor.javaAPI DocExample1902Mon Nov 09 12:45:54 GMT 1998None

SelectionMonitor

public class SelectionMonitor extends JPanel implements ListSelectionListener

Fields Summary
String[]
label
JRadioButton[]
buttons
JList
list
Constructors Summary
public SelectionMonitor()


      
        setLayout(new BorderLayout());

        list = new JList(label);
        JScrollPane pane = new JScrollPane(list);
        buttons = new JRadioButton[label.length];

        //  Format the list and the buttons in a vertical box
        Box rightBox = new Box(BoxLayout.Y_AXIS);
        Box leftBox = new Box(BoxLayout.Y_AXIS);

        //  Monitor all list selections
        list.addListSelectionListener(this);

        for(int i=0; i < label.length; i++) {
            buttons[i] = new JRadioButton("Selection " + i);
            rightBox.add(buttons[i]);
        }
        leftBox.add(pane);
        add(rightBox, BorderLayout.EAST);
        add(leftBox, BorderLayout.WEST);
Methods Summary
public static voidmain(java.lang.String[] s)

         JFrame frame = new JFrame("Selection Monitor");
         frame.addWindowListener(new BasicWindowMonitor());
         frame.setContentPane(new SelectionMonitor());
         frame.pack();
         frame.setVisible(true);
public voidvalueChanged(javax.swing.event.ListSelectionEvent e)

   
      //  If either of these are true, the event can be ignored.
      if ((e.getValueIsAdjusting() == false) || (e.getFirstIndex() == -1))
          return;
  
      //  Change the radio button to match the current selection state
      //  for each list item that reported a change.
      for (int i = e.getFirstIndex(); i <= e.getLastIndex(); i++) {
        buttons[i].setSelected(((JList)e.getSource()).isSelectedIndex(i));
      }