Help on JComboBox

Question

Hi,
I want to create a custom combobox. if i open the popup menu in the combo box, it should display a jtable in that rendering area of the combo box popup menu. i want to add any types of component in that jtable(Jbutton, label, combobox).
Finally i want to add a new JButton in that jCombo popup area. the content of the button is "Connect". If the user click the connect button, then only the popup should be invisible.
Any Idea?
Can i use the ComboBoxRenderer to this?

Answer 1

hi,
i didn't had any sample program.. i did this just for your help.. this is just an idea that how it can go..
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.Popup;
import javax.swing.PopupFactory;
* @author          : aniruddha<br>
* @date          : Apr 11, 2007,  3:49:15 PM<br>
* @source          : ADCCombo.java<br>
* @project          : HelpForum<br>
public class ADCCombo extends JPanel
     private JButton     m_btnBrowse     = null;
     private JLabel     m_lblMain     = null;
     private Popup     m_objPopup     = null;
     private boolean m_bisVisible = false;
     public ADCCombo()
          final PopupFactory factory = PopupFactory.getSharedInstance();
          setLayout(new BorderLayout());
          add(m_lblMain = new JLabel("OK"), BorderLayout.CENTER);
          add(m_btnBrowse = new JButton("..."), BorderLayout.EAST);
          m_btnBrowse.setMargin(new Insets(0, 0, 0, 0));
          final JTextArea txt = new JTextArea(3, 10);
          final Component l_cmp = new JScrollPane(txt);
          m_btnBrowse.setFocusable(false);
          m_btnBrowse.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent a_objEvent)
                    if(m_objPopup != null)
                         if(m_bisVisible)
                              m_objPopup.hide();
                              m_bisVisible = false;
                              return;
                    m_objPopup = factory.getPopup(ADCCombo.this, l_cmp, l_objJFrame.getX() + 3, l_objJFrame.getY() + ADCCombo.this.getHeight() + ADCCombo.this.getY() + 25);
                    m_objPopup.show();
                    txt.requestFocus();
                    txt.setText(ADCCombo.this.toString());
                    m_bisVisible = true;
     static JFrame l_objJFrame = new JFrame("Custom Combo");
     public static void main(String[] args)
          l_objJFrame.add(new ADCCombo(), BorderLayout.NORTH);
          Dimension dimSize = Toolkit.getDefaultToolkit().getScreenSize();
          l_objJFrame.setSize((int) (dimSize.getWidth() / 10) * 4, (int) (dimSize.getHeight() / 10) * 4);
          l_objJFrame.setLocationRelativeTo(null);
          l_objJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          l_objJFrame.setVisible(true);
}this is another way...
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.Popup;
import javax.swing.PopupFactory;
* @author          : aniruddha<br>
* @date          : Apr 11, 2007,  3:49:15 PM<br>
* @source          : ADCCombo.java<br>
* @project          : HelpForum<br>
public class ADCCombo extends JPanel
     private JButton     m_btnBrowse     = null;
     private JLabel     m_lblMain     = null;
     private JPopupMenu     m_objPopup     = null;
     public ADCCombo()
          setLayout(new BorderLayout());
          add(m_lblMain = new JLabel("OK"), BorderLayout.CENTER);
          add(m_btnBrowse = new JButton("..."), BorderLayout.EAST);
          m_btnBrowse.setMargin(new Insets(0, 0, 0, 0));
          final JTextArea txt = new JTextArea(3, 10);
          final Component l_cmp = new JScrollPane(txt);
          m_objPopup = new JPopupMenu();
          m_objPopup.add(l_cmp);
          m_btnBrowse.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent a_objEvent)
                    m_objPopup.show(ADCCombo.this, getX(), getY() + getHeight());
     static JFrame l_objJFrame = new JFrame("Custom Combo");
     public static void main(String[] args)
          l_objJFrame.add(new ADCCombo(), BorderLayout.NORTH);
          Dimension dimSize = Toolkit.getDefaultToolkit().getScreenSize();
          l_objJFrame.setSize((int) (dimSize.getWidth() / 10) * 4, (int) (dimSize.getHeight() / 10) * 4);
          l_objJFrame.setLocationRelativeTo(null);
          l_objJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          l_objJFrame.setVisible(true);
}regards
Aniruddha