// From: mg@dsd.camb.inmet.com (Mitch Gart)

import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.util.*;

public class PopupDemo extends Frame 
    implements ActionListener, MouseListener {

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

	public PopupDemo() {
		MenuBar mb = new MenuBar();
		setMenuBar(mb);
		Menu m = new Menu("file");
		mb.add(m);
		MenuItem item = new MenuItem("file-1");
		item.addActionListener(this);
		m.add(item);
		item = new MenuItem("file-2");
		m.add(item);

		setSize(100, 100);
		setLayout(new BorderLayout());

		Label l = new Label("label");
		addPopup(l, "label");
		add(l, "North");

		Panel p = new Panel();
		addPopup(p, "Panel");
		add(p, "Center");

		Button b = new Button("button");
		addPopup(b, "button");
		add(b, "South");
	}

	public void actionPerformed(ActionEvent e) {
		System.out.println("actionPerformed, event=" + e + ", mod=" + getMods(e));
		System.out.println(" command=" + e.getActionCommand());
		System.out.println(" param=" + e.paramString());
		System.out.println(" source=" + e.getSource());
	}

	  String getMods(ActionEvent e) { return getMods(e.getModifiers()); }

	  String getMods(MouseEvent e) { return getMods(e.getModifiers()); }

  // a convenience routine for printing the Modifier keys
	String getMods(int mods) {
    String modstr = "";
    if ((mods & ActionEvent.SHIFT_MASK) == ActionEvent.SHIFT_MASK)
      modstr += (" SHIFT");
    if ((mods & ActionEvent.ALT_MASK) == ActionEvent.ALT_MASK)
      modstr += (" ALT");
    if ((mods & ActionEvent.CTRL_MASK) == ActionEvent.CTRL_MASK)
      modstr += (" CTRL");
    if ((mods & ActionEvent.META_MASK) == ActionEvent.META_MASK)
      modstr += (" META");
    return modstr;
  }

  public void mouseClicked (MouseEvent e) {
    mouseAction("mouseClicked", e);
  }

  public void mouseEntered (MouseEvent e) {
  }

  public void mouseExited (MouseEvent e) {
  }

  public void mousePressed (MouseEvent e) {
    mouseAction("mousePressed", e);
  }

  public void mouseReleased (MouseEvent e) {
    mouseAction("mouseReleased", e);
  }

  void mouseAction (String which, MouseEvent e) {
    Component c = e.getComponent();
    System.out.println(which + "e=" + e + ", mods=" + getMods(e) +
                       ", component=" + c);
    if (e.isPopupTrigger()) {
      System.out.println("isPopup");
      PopupMenu pm = getHash(c);
      pm.show(c, c.getSize().width/2, c.getSize().height/2);
    }
  }


  void addPopup(Component c, String name) {
    PopupMenu pm = new PopupMenu();
    MenuItem mi = new MenuItem(name + "-1");
    mi.addActionListener(this);
    pm.add(mi);

    mi = new MenuItem(name + "-2");
    pm.add(mi);

    setHash(c, pm);
    c.add(pm);
    c.addMouseListener(this);
  }


  Hashtable popupTable = new Hashtable();

  void setHash(Component c, PopupMenu p) {
    popupTable.put(c, p);
  }

  PopupMenu getHash(Component c) {
    return (PopupMenu)(popupTable.get(c));
  }
}