Opening JInternalFrame on JMenu selection

[Ankit Garg]

Okay I'm stuck at a little problem. I'm creating a desktop application which uses JDesktopPane and JInternalFrame. Now the main window which contains these internal frames has a menu bar. Some of the menu's don't have any options in them. Instead I have to open a JInternalFrame when the menu is clicked (I know it sounds a little weird but I can't help it). I did it using menuListener on the JMenu. The problem is that the JInternalFrame doesn't gets focus as the empty menu has the focus. I tried to get focus in the internal frame using requestFocus, grabFocus, and setSelected but none worked (I called these methods after the internal frame was visible as I read that they don't work before the frame is visible). As an alternative I tried to add JMenuItem to JMenuBar, it took the full width which I controlled using setMaximumSize. The internal frame is getting focus but the problem in this case is that the shortcut key that I set for this menu item (using setMnemonic) doesn't work. Does anyone know how to either get the internal frame to focus when using JMenu or get the shortcut to work if I put JMenuItem to JMenuBar...

[Michael Dunn]

worked OK for me, in a simple demo program.
setAccelerator seems to work OK when the menuItem is added directly to the menuBar (leaving setMnemonic to show the underlined shortcut key)

    
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Testing
{
  JDesktopPane desktop = new JDesktopPane();
  int counter = 1;
  int x = 0, y = 0;
  public void buildGUI()
  {
    JMenu menu = new JMenu("File");
    JMenuItem addIF = new JMenuItem("add internal frame");
    addIF.setMnemonic('A');
    menu.add(addIF);
    JMenuBar menuBar = new JMenuBar();
    menuBar.add(menu);
    JMenuItem addIF_1 = new JMenuItem("add internal frame");
    addIF_1.setMnemonic('F');
    addIF_1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F,0));
    menuBar.add(addIF_1);

    JFrame f = new JFrame();
    f.setJMenuBar(menuBar);
    f.getContentPane().add(desktop);
    f.setSize(1000,800);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
    addIF.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        JInternalFrame jif = new JInternalFrame("#"+counter,true,true,true,true);
        jif.setBounds(x,y,50,50);
        jif.setVisible(true);
        desktop.add(jif);
        counter++;
        x += 50;
        y += 50;
        try{jif.setSelected(true);}catch(Exception e){e.printStackTrace();}
      }
    });
    addIF_1.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        System.out.println("OK");
      }
    });
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}

[Ankit Garg]

Use both Mnemonics and Accelerator, why didn't I think of that .

Thanks Michael