Using MenuSelectionManager to determine the current selection path. : MenuSelectionManager « Swing « Java Tutorial

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Java Tutorial » Swing » MenuSelectionManager 
14. 28. 1. Using MenuSelectionManager to determine the current selection path.
Using MenuSelectionManager to determine the current selection path.
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.MenuElement;
import javax.swing.MenuSelectionManager;

public class ContructMenuMenuSelectionManager {
  public static void main(final String args[]) {
    JFrame frame = new JFrame("MenuSample Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JMenuBar menuBar = new JMenuBar();

    // File Menu, F - Mnemonic
    JMenu fileMenu = new JMenu("File");
    fileMenu.setMnemonic(KeyEvent.VK_F);
    menuBar.add(fileMenu);

    // File->New, N - Mnemonic
    JMenuItem newMenuItem = new JMenuItem("New");
    fileMenu.add(newMenuItem);
    
    newMenuItem.addActionListener(new ActionListener(){

      public void actionPerformed(ActionEvent e) {
       MenuElement[] eles =  MenuSelectionManager.defaultManager().getSelectedPath();
       for(MenuElement ele: eles){
         System.out.println(ele);
         
       }
       MenuSelectionManager.defaultManager().clearSelectedPath();
      }});

    frame.setJMenuBar(menuBar);
    frame.setSize(350250);
    frame.setVisible(true);
  }
}
14. 28. MenuSelectionManager
14. 28. 1. Using MenuSelectionManager to determine the current selection path.Using MenuSelectionManager to determine the current selection path.
14. 28. 2. Getting the Currently Selected Menu or Menu Item
14. 28. 3. Create a change listener and register with the menu selection manager
14. 28. 4. Listening for Changes to the Currently Selected Menu or Menu Item
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