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Description
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import java.awt.BorderLayout;
import java.awt.Panel;
import java.awt.event.*;
import com.sun.java.swing.*;
/** This class demonstrates that MEDUIM WEIGHT JPopupMenus
* steal focus and don't handle mnemonics or accelerator keys.
*
* Forcing a MEDIUM WEIGHT popup menu requires the following steps.
* Step 1: Run the application.
* Step 2: Resize the main window so that Menu 1 obscures the JTextField
* text, but fits completely within the main window.
*
* BUGS: Give focus to the JTextField and popup Menu 1 using the
* mnemonic '1'. Note that the MenuItem that lands over the text
* CURSOR is highlighted. (This focus jump is also seen in HeavyWeight
* menus & on WinNT.)
* At this point, you can't traverse the menu, use the MenuItem
* mnemonics or any accelerators (Menu 1's or Menu 2's).
* ALSO, using Menu 1 with the mouse does not return focus to the
* JTextField, like (HeavyWeight) Menu 2 does.
*
*
* Solsparc 2.6; JDK 1.1.5; Swing 1.0.1
* xxxxx@xxxxx -labs.com
*/
class Menu1 extends JFrame implements ActionListener
{
Menu1()
{
// use MediumWeight instead of LightWeight
JPopupMenu.setDefaultLightWeightPopupEnabled(false);
JMenuBar mb = new JMenuBar();
setJMenuBar(mb);
JMenu menu = new JMenu("Menu 1");
mb.add(menu);
menu.setMnemonic('1');
for (int i = 3 ; i < 6 ; i++)
{
addMenuItem(menu, i);
}
menu = new JMenu("Menu 2");
mb.add(menu);
menu.setMnemonic('2');
for (int i = 6 ; i < 15 ; i++)
{
addMenuItem(menu, i);
}
getContentPane().add(new JTextField("takes up space"));
}
private void addMenuItem(JMenu menu, int i)
{
JMenuItem item = new JMenuItem("MenuItem " + i);
menu.add(item);
item.addActionListener(this);
item.setMnemonic('0' + i);
item.setAccelerator(
KeyStroke.getKeyStroke((char)(KeyEvent.VK_A + i),
KeyEvent.ALT_MASK));
}
public void actionPerformed(ActionEvent e)
{
System.out.println(e.getActionCommand());
}
public static void main(String args[])
{
JFrame test = new Menu1();
test.pack();
test.show();
}
}
(Review ID: 26737)
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