keyboard applications

Here is a simple demonstration of a JPopupMenu with Shortcut Accelerators:

import javax.swing.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.KeyEvent;

import java.awt.Event;

class Test extends JFrame {

private JLabel label;

private JPopupMenu jpm;

private JMenuItem changeTextItem;

private JMenuItem resetTextItem;

public Test() {

initComponents();

}

private void initComponents() {

label = new JLabel("Right-click on me, and select Change Text (or press CTRL+G)");

label.setSize(400, 20);

label.setLocation(5, 5);

jpm = new JPopupMenu();

changeTextItem = new JMenuItem("Change Text");

changeTextItem.setMnemonic((int)'C');

changeTextItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, Event.CTRL_MASK));

resetTextItem = new JMenuItem("Reset Text");

resetTextItem.setMnemonic((int)'R');

resetTextItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_R, Event.CTRL_MASK));

label.add(jpm);

jpm.add(changeTextItem);

jpm.add(resetTextItem);

this.getContentPane().setLayout(null);

this.getContentPane().add(label);

this.pack();

this.setSize(500, 300);

this.setLocationRelativeTo(null);

this.setTitle("Test Application");

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

label.addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent evt) {

if( evt.getButton() == MouseEvent.BUTTON3 )

jpm.show(label, evt.getX(), evt.getY());

}

});

changeTextItem.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent evt) {

label.setText("You clicked on the menu-item!");

}

});

resetTextItem.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent evt) {

label.setText("Right-click on me, and select Change Text (or press CTRL+G)");

}

});

}

public static void main(String[] argv) { new Test().setVisible(true); }

}

Navy_Codera at 2007-7-11 15:37:40 >