Mega Code Archive
Disable an Action
<![CDATA[
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractAction;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JToolBar;
public class ActionDisabled extends JFrame {
public static final String ENABLE = "ENABLE";
public static final String DISABLE = "DISABLE";
private JToolBar toolBar = new JToolBar();
private JMenuBar menuBar = new JMenuBar();
private JMenu testMenu = new JMenu("Test");
private MyAction theAction = new MyAction(this);
private JMenuItem disableActionItem= new JMenuItem("Disable the Action");
public ActionDisabled() {
this.setJMenuBar(menuBar);
menuBar.add(testMenu);
testMenu.add(theAction);
toolBar.add(theAction);
disableActionItem.setActionCommand(DISABLE);
testMenu.add(disableActionItem);
disableActionItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals(DISABLE)) {
theAction.setEnabled(false);
disableActionItem.setText("Enable the Action");
disableActionItem.setActionCommand(ENABLE);
} else {
theAction.setEnabled(true);
disableActionItem.setText("Disable the Action");
disableActionItem.setActionCommand(DISABLE);
}
}
});
this.getContentPane().add(toolBar, BorderLayout.NORTH);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.getContentPane().setBackground(Color.red);
this.setSize(320, 200);
this.setVisible(true);
}
public static void main(String[] args) {
ActionDisabled t = new ActionDisabled();
}
}
class MyAction extends AbstractAction {
JFrame f;
boolean toggle = true;
public MyAction(JFrame f) {
super("Change Color");
this.f = f;
}
public void actionPerformed(ActionEvent e) {
if (toggle) {
f.getContentPane().setBackground(Color.blue);
toggle = false;
} else {
f.getContentPane().setBackground(Color.red);
toggle = true;
}
f.repaint();
}
}
]]>