processing_popup_menu.pde

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.Component;
import javax.swing.JFrame;



java.awt.event.MouseEvent e;
class PopupMenu implements MouseListener{
  JPopupMenu popup;
  JFrame frame;
  public PopupMenu(PApplet app){
    frame = (JFrame) ((processing.awt.PSurfaceAWT.SmoothCanvas)app.getSurface().getNative()).getFrame();

    popup = new JPopupMenu();
    JMenuItem import_item = new JMenuItem("import");
    popup.add(import_item);
    import_item.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent arg0) {
          println("import");
      }
    }
    );
  }

  private void showPopup(MouseEvent e){
    if (e.isPopupTrigger()) {
      popup.show(e.getComponent(), e.getX(), e.getY());
    }
  }
  @Override
  public void mouseClicked(MouseEvent e) {}

  @Override
  public void mouseEntered(MouseEvent e) {}

  @Override
  public void mouseExited(MouseEvent e) {}

  @Override
  public void mousePressed(MouseEvent e) {
    showPopup(e);
  }

  @Override
  public void mouseReleased(MouseEvent e) {
    showPopup(e);
  }
}
PopupMenu p;
void setup(){
  Component component = (Component) this.surface.getNative();
  component.addMouseListener(new PopupMenu(this));
  p = new PopupMenu(this);
  size(300,300);
}

void draw(){}